• http://repositori.usu.ac.id/handle/123456789/1839
• http://repositori.usu.ac.id/handle/123456789/1848
• http://repositori.usu.ac.id/handle/123456789/1849
• http://repositori.usu.ac.id/handle/123456789/1850
• http://repositori.usu.ac.id/handle/123456789/1898
• http://repositori.usu.ac.id/handle/123456789/1899
• http://repositori.usu.ac.id/handle/123456789/1900
• http://repositori.usu.ac.id/handle/123456789/1903
• http://repositori.usu.ac.id/handle/123456789/1904
• http://repositori.usu.ac.id/handle/123456789/1905
• http://repositori.usu.ac.id/handle/123456789/1838
• http://repositori.usu.ac.id/handle/123456789/1840
• http://repositori.usu.ac.id/handle/123456789/1841
• http://repositori.usu.ac.id/handle/123456789/1842
• http://repositori.usu.ac.id/handle/123456789/1843
• http://repositori.usu.ac.id/handle/123456789/1844
• http://repositori.usu.ac.id/handle/123456789/1846
• http://repositori.usu.ac.id/handle/123456789/1845
• http://repositori.usu.ac.id/handle/123456789/1847
• http://repositori.usu.ac.id/handle/123456789/1852
• http://repositori.usu.ac.id/handle/123456789/1851
• http://repositori.usu.ac.id/handle/123456789/1853
• http://repositori.usu.ac.id/handle/123456789/1854
• http://repositori.usu.ac.id/handle/123456789/1855
• http://repositori.usu.ac.id/handle/123456789/1859
• http://repositori.usu.ac.id/handle/123456789/1856
• http://repositori.usu.ac.id/handle/123456789/1858
• http://repositori.usu.ac.id/handle/123456789/1857
• http://repositori.usu.ac.id/handle/123456789/1860
• http://repositori.usu.ac.id/handle/123456789/1861
• http://repositori.usu.ac.id/handle/123456789/1862
• http://repositori.usu.ac.id/handle/123456789/1863
• http://repositori.usu.ac.id/handle/123456789/1864
• http://repositori.usu.ac.id/handle/123456789/1865
• http://repositori.usu.ac.id/handle/123456789/1866
• http://repositori.usu.ac.id/handle/123456789/1867
• http://repositori.usu.ac.id/handle/123456789/1868
• http://repositori.usu.ac.id/handle/123456789/1869
• http://repositori.usu.ac.id/handle/123456789/1870
• http://repositori.usu.ac.id/handle/123456789/1872
• http://repositori.usu.ac.id/handle/123456789/1871
• http://repositori.usu.ac.id/handle/123456789/1874
• http://repositori.usu.ac.id/handle/123456789/1873
• http://repositori.usu.ac.id/handle/123456789/1875
• http://repositori.usu.ac.id/handle/123456789/1876
• http://repositori.usu.ac.id/handle/123456789/1878
• http://repositori.usu.ac.id/handle/123456789/1877
• http://repositori.usu.ac.id/handle/123456789/1892
• http://repositori.usu.ac.id/handle/123456789/1893
• http://repositori.usu.ac.id/handle/123456789/1894
• http://repositori.usu.ac.id/handle/123456789/1938
• http://repositori.usu.ac.id/handle/123456789/1939
• http://repositori.usu.ac.id/handle/123456789/1943
• http://repositori.usu.ac.id/handle/123456789/1949
• http://repositori.usu.ac.id/handle/123456789/1945
• http://repositori.usu.ac.id/handle/123456789/1946
• http://repositori.usu.ac.id/handle/123456789/1947
• http://repositori.usu.ac.id/handle/123456789/1957
• http://repositori.usu.ac.id/handle/123456789/1958
• http://repositori.usu.ac.id/handle/123456789/1960
• http://repositori.usu.ac.id/handle/123456789/1962
• http://repositori.usu.ac.id/handle/123456789/1964
• http://repositori.usu.ac.id/handle/123456789/1965
• http://repositori.usu.ac.id/handle/123456789/1879
• http://repositori.usu.ac.id/handle/123456789/1880
• http://repositori.usu.ac.id/handle/123456789/1882
• http://repositori.usu.ac.id/handle/123456789/1883
• http://repositori.usu.ac.id/handle/123456789/1884
• http://repositori.usu.ac.id/handle/123456789/1885
• http://repositori.usu.ac.id/handle/123456789/1886
• http://repositori.usu.ac.id/handle/123456789/1887
• http://repositori.usu.ac.id/handle/123456789/1888
• http://repositori.usu.ac.id/handle/123456789/1889
• http://repositori.usu.ac.id/handle/123456789/1890
• http://repositori.usu.ac.id/handle/123456789/1891
• http://repositori.usu.ac.id/handle/123456789/1895
• http://repositori.usu.ac.id/handle/123456789/1896
• http://repositori.usu.ac.id/handle/123456789/1897
• http://repositori.usu.ac.id/handle/123456789/1901
• http://repositori.usu.ac.id/handle/123456789/1902
• http://repositori.usu.ac.id/handle/123456789/1906
• http://repositori.usu.ac.id/handle/123456789/1907
• http://repositori.usu.ac.id/handle/123456789/1908
• http://repositori.usu.ac.id/handle/123456789/1909
• http://repositori.usu.ac.id/handle/123456789/1910
• http://repositori.usu.ac.id/handle/123456789/1911
• http://repositori.usu.ac.id/handle/123456789/1912
• http://repositori.usu.ac.id/handle/123456789/1913
• http://repositori.usu.ac.id/handle/123456789/1914
• http://repositori.usu.ac.id/handle/123456789/1915
• http://repositori.usu.ac.id/handle/123456789/1916
• http://repositori.usu.ac.id/handle/123456789/1917
• http://repositori.usu.ac.id/handle/123456789/1918
• http://repositori.usu.ac.id/handle/123456789/1919
• http://repositori.usu.ac.id/handle/123456789/1920
• http://repositori.usu.ac.id/handle/123456789/1921
• http://repositori.usu.ac.id/handle/123456789/1922
• http://repositori.usu.ac.id/handle/123456789/1923
• http://repositori.usu.ac.id/handle/123456789/1924
• http://repositori.usu.ac.id/handle/123456789/1925
• http://repositori.usu.ac.id/handle/123456789/1926
• http://repositori.usu.ac.id/handle/123456789/1927
• http://repositori.usu.ac.id/handle/123456789/1928
• http://repositori.usu.ac.id/handle/123456789/1929
• http://repositori.usu.ac.id/handle/123456789/1930
• http://repositori.usu.ac.id/handle/123456789/1931
• http://repositori.usu.ac.id/handle/123456789/1932
• http://repositori.usu.ac.id/handle/123456789/1933
• http://repositori.usu.ac.id/handle/123456789/1934
• http://repositori.usu.ac.id/handle/123456789/1954
• http://repositori.usu.ac.id/handle/123456789/1955
• http://repositori.usu.ac.id/handle/123456789/1956
• http://repositori.usu.ac.id/handle/123456789/1959
• http://repositori.usu.ac.id/handle/123456789/1961
• http://repositori.usu.ac.id/handle/123456789/1963
• http://repositori.usu.ac.id/handle/123456789/1966
• http://repositori.usu.ac.id/handle/123456789/1967
• http://repositori.usu.ac.id/handle/123456789/1968
• http://repositori.usu.ac.id/handle/123456789/1969
• http://repositori.usu.ac.id/handle/123456789/1970
• http://repositori.usu.ac.id/handle/123456789/1935
• http://repositori.usu.ac.id/handle/123456789/1936
• http://repositori.usu.ac.id/handle/123456789/1937
• http://repositori.usu.ac.id/handle/123456789/1940
• http://repositori.usu.ac.id/handle/123456789/1941
• http://repositori.usu.ac.id/handle/123456789/1942
• http://repositori.usu.ac.id/handle/123456789/1944
• http://repositori.usu.ac.id/handle/123456789/1948
• http://repositori.usu.ac.id/handle/123456789/1950
• http://repositori.usu.ac.id/handle/123456789/1952
• http://repositori.usu.ac.id/handle/123456789/1951
• http://repositori.usu.ac.id/handle/123456789/1953
• http://repositori.usu.ac.id/handle/123456789/1971
• http://repositori.usu.ac.id/handle/123456789/1972
• http://repositori.usu.ac.id/handle/123456789/1973
• http://repositori.usu.ac.id/handle/123456789/1974
• http://repositori.usu.ac.id/handle/123456789/1975
• http://repositori.usu.ac.id/handle/123456789/1976
• http://repositori.usu.ac.id/handle/123456789/1977
• http://repositori.usu.ac.id/handle/123456789/1978
• http://repositori.usu.ac.id/handle/123456789/1979
• http://repositori.usu.ac.id/handle/123456789/1980
• http://repositori.usu.ac.id/handle/123456789/1981
• http://repositori.usu.ac.id/handle/123456789/1982
• http://repositori.usu.ac.id/handle/123456789/1983
• http://repositori.usu.ac.id/handle/123456789/1984
• http://repositori.usu.ac.id/handle/123456789/1985
• http://repositori.usu.ac.id/handle/123456789/1986
• http://repositori.usu.ac.id/handle/123456789/1987
• http://repositori.usu.ac.id/handle/123456789/1988
• http://repositori.usu.ac.id/handle/123456789/1989
• http://repositori.usu.ac.id/handle/123456789/1990
• http://repositori.usu.ac.id/handle/123456789/1991
• http://repositori.usu.ac.id/handle/123456789/1992
• http://repositori.usu.ac.id/handle/123456789/1993
• http://repositori.usu.ac.id/handle/123456789/1994
• http://repositori.usu.ac.id/handle/123456789/1995
• http://repositori.usu.ac.id/handle/123456789/1996
• http://repositori.usu.ac.id/handle/123456789/1997
• http://repositori.usu.ac.id/handle/123456789/1998
• http://repositori.usu.ac.id/handle/123456789/1999
• http://repositori.usu.ac.id/handle/123456789/2000
• http://repositori.usu.ac.id/handle/123456789/2001
• http://repositori.usu.ac.id/handle/123456789/2002
• http://repositori.usu.ac.id/handle/123456789/2003
• http://repositori.usu.ac.id/handle/123456789/2004
• http://repositori.usu.ac.id/handle/123456789/2005
• http://repositori.usu.ac.id/handle/123456789/2008
• http://repositori.usu.ac.id/handle/123456789/2006
• http://repositori.usu.ac.id/handle/123456789/2007
• http://repositori.usu.ac.id/handle/123456789/2009
• http://repositori.usu.ac.id/handle/123456789/2011
• http://repositori.usu.ac.id/handle/123456789/2012
• http://repositori.usu.ac.id/handle/123456789/2019
• http://repositori.usu.ac.id/handle/123456789/2022
• http://repositori.usu.ac.id/handle/123456789/2059
• http://repositori.usu.ac.id/handle/123456789/2060
• http://repositori.usu.ac.id/handle/123456789/2062
• http://repositori.usu.ac.id/handle/123456789/2010
• http://repositori.usu.ac.id/handle/123456789/2013
• http://repositori.usu.ac.id/handle/123456789/2014
• http://repositori.usu.ac.id/handle/123456789/2015
• http://repositori.usu.ac.id/handle/123456789/2058
• http://repositori.usu.ac.id/handle/123456789/2061
• http://repositori.usu.ac.id/handle/123456789/2016
• http://repositori.usu.ac.id/handle/123456789/2017
• http://repositori.usu.ac.id/handle/123456789/2018
• http://repositori.usu.ac.id/handle/123456789/2020
• http://repositori.usu.ac.id/handle/123456789/2021
• http://repositori.usu.ac.id/handle/123456789/2023
• http://repositori.usu.ac.id/handle/123456789/2024
• http://repositori.usu.ac.id/handle/123456789/2025
• http://repositori.usu.ac.id/handle/123456789/2026
• http://repositori.usu.ac.id/handle/123456789/2027
• http://repositori.usu.ac.id/handle/123456789/2028
• http://repositori.usu.ac.id/handle/123456789/2029
• http://repositori.usu.ac.id/handle/123456789/2030
• http://repositori.usu.ac.id/handle/123456789/2031
• http://repositori.usu.ac.id/handle/123456789/2032
• http://repositori.usu.ac.id/handle/123456789/2033
• http://repositori.usu.ac.id/handle/123456789/2034
• http://repositori.usu.ac.id/handle/123456789/2035
• http://repositori.usu.ac.id/handle/123456789/2042
• http://repositori.usu.ac.id/handle/123456789/2041
• http://repositori.usu.ac.id/handle/123456789/2043
• http://repositori.usu.ac.id/handle/123456789/2044
• http://repositori.usu.ac.id/handle/123456789/2049
• http://repositori.usu.ac.id/handle/123456789/2050
• http://repositori.usu.ac.id/handle/123456789/2053
• http://repositori.usu.ac.id/handle/123456789/2054
• http://repositori.usu.ac.id/handle/123456789/2055
• http://repositori.usu.ac.id/handle/123456789/2063
• http://repositori.usu.ac.id/handle/123456789/2070
• http://repositori.usu.ac.id/handle/123456789/2071
• http://repositori.usu.ac.id/handle/123456789/2073
• http://repositori.usu.ac.id/handle/123456789/2074
• http://repositori.usu.ac.id/handle/123456789/2083
• http://repositori.usu.ac.id/handle/123456789/2036
• http://repositori.usu.ac.id/handle/123456789/2037
• http://repositori.usu.ac.id/handle/123456789/2039
• http://repositori.usu.ac.id/handle/123456789/2038
• http://repositori.usu.ac.id/handle/123456789/2040
• http://repositori.usu.ac.id/handle/123456789/2045
• http://repositori.usu.ac.id/handle/123456789/2047
• http://repositori.usu.ac.id/handle/123456789/2046
• http://repositori.usu.ac.id/handle/123456789/2048
• http://repositori.usu.ac.id/handle/123456789/2051
• http://repositori.usu.ac.id/handle/123456789/2052
• http://repositori.usu.ac.id/handle/123456789/2056
• http://repositori.usu.ac.id/handle/123456789/2057
• http://repositori.usu.ac.id/handle/123456789/2068
• http://repositori.usu.ac.id/handle/123456789/2067
• http://repositori.usu.ac.id/handle/123456789/2069
• http://repositori.usu.ac.id/handle/123456789/2072
• http://repositori.usu.ac.id/handle/123456789/2075
• http://repositori.usu.ac.id/handle/123456789/2076
• http://repositori.usu.ac.id/handle/123456789/2078
• http://repositori.usu.ac.id/handle/123456789/2077
• http://repositori.usu.ac.id/handle/123456789/2079
• http://repositori.usu.ac.id/handle/123456789/2081
• http://repositori.usu.ac.id/handle/123456789/2080
• http://repositori.usu.ac.id/handle/123456789/2085
• http://repositori.usu.ac.id/handle/123456789/2089
• http://repositori.usu.ac.id/handle/123456789/2092
• http://repositori.usu.ac.id/handle/123456789/2093
• http://repositori.usu.ac.id/handle/123456789/2094
• http://repositori.usu.ac.id/handle/123456789/2095
• http://repositori.usu.ac.id/handle/123456789/2101
• http://repositori.usu.ac.id/handle/123456789/2064
• http://repositori.usu.ac.id/handle/123456789/2065
• http://repositori.usu.ac.id/handle/123456789/2066
• http://repositori.usu.ac.id/handle/123456789/2082
• http://repositori.usu.ac.id/handle/123456789/2084
• http://repositori.usu.ac.id/handle/123456789/2086
• http://repositori.usu.ac.id/handle/123456789/2087
• http://repositori.usu.ac.id/handle/123456789/2088
• http://repositori.usu.ac.id/handle/123456789/2091
• http://repositori.usu.ac.id/handle/123456789/2090
• http://repositori.usu.ac.id/handle/123456789/2096
• http://repositori.usu.ac.id/handle/123456789/2097
• http://repositori.usu.ac.id/handle/123456789/2099
• http://repositori.usu.ac.id/handle/123456789/2098
• http://repositori.usu.ac.id/handle/123456789/2100
• http://repositori.usu.ac.id/handle/123456789/2102
• http://repositori.usu.ac.id/handle/123456789/2103
• http://repositori.usu.ac.id/handle/123456789/2104
• http://repositori.usu.ac.id/handle/123456789/2105
• http://repositori.usu.ac.id/handle/123456789/2106
• http://repositori.usu.ac.id/handle/123456789/2107
• http://repositori.usu.ac.id/handle/123456789/2108
• http://repositori.usu.ac.id/handle/123456789/2112
• http://repositori.usu.ac.id/handle/123456789/2113
• http://repositori.usu.ac.id/handle/123456789/2114
• http://repositori.usu.ac.id/handle/123456789/2115
• http://repositori.usu.ac.id/handle/123456789/2116
• http://repositori.usu.ac.id/handle/123456789/2117
• http://repositori.usu.ac.id/handle/123456789/2118
• http://repositori.usu.ac.id/handle/123456789/2119
• http://repositori.usu.ac.id/handle/123456789/2120
• http://repositori.usu.ac.id/handle/123456789/2121
• http://repositori.usu.ac.id/handle/123456789/2109
• http://repositori.usu.ac.id/handle/123456789/2110
• http://repositori.usu.ac.id/handle/123456789/2111
• http://repositori.usu.ac.id/handle/123456789/2122
• http://repositori.usu.ac.id/handle/123456789/2123
• http://repositori.usu.ac.id/handle/123456789/2124
• http://repositori.usu.ac.id/handle/123456789/2125
• http://repositori.usu.ac.id/handle/123456789/2128
• http://repositori.usu.ac.id/handle/123456789/2126
• http://repositori.usu.ac.id/handle/123456789/2127
• http://repositori.usu.ac.id/handle/123456789/2129
• http://repositori.usu.ac.id/handle/123456789/2131
• http://repositori.usu.ac.id/handle/123456789/2130
• http://repositori.usu.ac.id/handle/123456789/2132
• http://repositori.usu.ac.id/handle/123456789/2133
• http://repositori.usu.ac.id/handle/123456789/2134
• http://repositori.usu.ac.id/handle/123456789/2135
• http://repositori.usu.ac.id/handle/123456789/2138
• http://repositori.usu.ac.id/handle/123456789/2136
• http://repositori.usu.ac.id/handle/123456789/2137
• http://repositori.usu.ac.id/handle/123456789/2139
• http://repositori.usu.ac.id/handle/123456789/2140
• http://repositori.usu.ac.id/handle/123456789/2142
• http://repositori.usu.ac.id/handle/123456789/2141
• http://repositori.usu.ac.id/handle/123456789/2143
• http://repositori.usu.ac.id/handle/123456789/2144
• http://repositori.usu.ac.id/handle/123456789/2145
• http://repositori.usu.ac.id/handle/123456789/2147
• http://repositori.usu.ac.id/handle/123456789/2146
• http://repositori.usu.ac.id/handle/123456789/2148
• http://repositori.usu.ac.id/handle/123456789/2149
• http://repositori.usu.ac.id/handle/123456789/2151
• http://repositori.usu.ac.id/handle/123456789/2150
• http://repositori.usu.ac.id/handle/123456789/2152
• http://repositori.usu.ac.id/handle/123456789/2155
• http://repositori.usu.ac.id/handle/123456789/2153
• http://repositori.usu.ac.id/handle/123456789/2154
• http://repositori.usu.ac.id/handle/123456789/2156
• http://repositori.usu.ac.id/handle/123456789/2157
• http://repositori.usu.ac.id/handle/123456789/2158
• http://repositori.usu.ac.id/handle/123456789/2159
• http://repositori.usu.ac.id/handle/123456789/2160
• http://repositori.usu.ac.id/handle/123456789/2161
• http://repositori.usu.ac.id/handle/123456789/2162
• http://repositori.usu.ac.id/handle/123456789/2163
• http://repositori.usu.ac.id/handle/123456789/2164
• http://repositori.usu.ac.id/handle/123456789/2165
• http://repositori.usu.ac.id/handle/123456789/2166
• http://repositori.usu.ac.id/handle/123456789/2167
• http://repositori.usu.ac.id/handle/123456789/2168
• http://repositori.usu.ac.id/handle/123456789/2169
• http://repositori.usu.ac.id/handle/123456789/2170
• http://repositori.usu.ac.id/handle/123456789/2171
• http://repositori.usu.ac.id/handle/123456789/2172
• http://repositori.usu.ac.id/handle/123456789/2173
• http://repositori.usu.ac.id/handle/123456789/2174
• http://repositori.usu.ac.id/handle/123456789/2175
• http://repositori.usu.ac.id/handle/123456789/2176
• http://repositori.usu.ac.id/handle/123456789/2180
• http://repositori.usu.ac.id/handle/123456789/2181
• http://repositori.usu.ac.id/handle/123456789/2182
• http://repositori.usu.ac.id/handle/123456789/2199
• http://repositori.usu.ac.id/handle/123456789/2241
• http://repositori.usu.ac.id/handle/123456789/2240
• http://repositori.usu.ac.id/handle/123456789/2250
• http://repositori.usu.ac.id/handle/123456789/2177
• http://repositori.usu.ac.id/handle/123456789/2178
• http://repositori.usu.ac.id/handle/123456789/2179
• http://repositori.usu.ac.id/handle/123456789/2183
• http://repositori.usu.ac.id/handle/123456789/2184
• http://repositori.usu.ac.id/handle/123456789/2185
• http://repositori.usu.ac.id/handle/123456789/2186
• http://repositori.usu.ac.id/handle/123456789/2187
• http://repositori.usu.ac.id/handle/123456789/2188
• http://repositori.usu.ac.id/handle/123456789/2189
• http://repositori.usu.ac.id/handle/123456789/2190
• http://repositori.usu.ac.id/handle/123456789/2191
• http://repositori.usu.ac.id/handle/123456789/2192
• http://repositori.usu.ac.id/handle/123456789/2193
• http://repositori.usu.ac.id/handle/123456789/2194
• http://repositori.usu.ac.id/handle/123456789/2195
• http://repositori.usu.ac.id/handle/123456789/2196
• http://repositori.usu.ac.id/handle/123456789/2206
• http://repositori.usu.ac.id/handle/123456789/2208
• http://repositori.usu.ac.id/handle/123456789/2209
• http://repositori.usu.ac.id/handle/123456789/2211
• http://repositori.usu.ac.id/handle/123456789/2222
• http://repositori.usu.ac.id/handle/123456789/2223
• http://repositori.usu.ac.id/handle/123456789/2226
• http://repositori.usu.ac.id/handle/123456789/2224
• http://repositori.usu.ac.id/handle/123456789/2225
• http://repositori.usu.ac.id/handle/123456789/2227
• http://repositori.usu.ac.id/handle/123456789/2229
• http://repositori.usu.ac.id/handle/123456789/2232
• http://repositori.usu.ac.id/handle/123456789/2233
• http://repositori.usu.ac.id/handle/123456789/2235
• http://repositori.usu.ac.id/handle/123456789/2234
• http://repositori.usu.ac.id/handle/123456789/2236
• http://repositori.usu.ac.id/handle/123456789/2238
• http://repositori.usu.ac.id/handle/123456789/2197
• http://repositori.usu.ac.id/handle/123456789/2200
• http://repositori.usu.ac.id/handle/123456789/2201
• http://repositori.usu.ac.id/handle/123456789/2202
• http://repositori.usu.ac.id/handle/123456789/2203
• http://repositori.usu.ac.id/handle/123456789/2212
• http://repositori.usu.ac.id/handle/123456789/2213
• http://repositori.usu.ac.id/handle/123456789/2214
• http://repositori.usu.ac.id/handle/123456789/2215
• http://repositori.usu.ac.id/handle/123456789/2216
• http://repositori.usu.ac.id/handle/123456789/2217
• http://repositori.usu.ac.id/handle/123456789/2218
• http://repositori.usu.ac.id/handle/123456789/2219
• http://repositori.usu.ac.id/handle/123456789/2220
• http://repositori.usu.ac.id/handle/123456789/2221
• http://repositori.usu.ac.id/handle/123456789/2228
• http://repositori.usu.ac.id/handle/123456789/2230
• http://repositori.usu.ac.id/handle/123456789/2231
• http://repositori.usu.ac.id/handle/123456789/2239
• http://repositori.usu.ac.id/handle/123456789/2242
• http://repositori.usu.ac.id/handle/123456789/2243
• http://repositori.usu.ac.id/handle/123456789/2244
• http://repositori.usu.ac.id/handle/123456789/2246
• http://repositori.usu.ac.id/handle/123456789/2245
• http://repositori.usu.ac.id/handle/123456789/2247
• http://repositori.usu.ac.id/handle/123456789/2248
• http://repositori.usu.ac.id/handle/123456789/2249
• http://repositori.usu.ac.id/handle/123456789/2251
• http://repositori.usu.ac.id/handle/123456789/2252
• http://repositori.usu.ac.id/handle/123456789/2253
• http://repositori.usu.ac.id/handle/123456789/2255
• http://repositori.usu.ac.id/handle/123456789/2256
• http://repositori.usu.ac.id/handle/123456789/2204
• http://repositori.usu.ac.id/handle/123456789/2205
• http://repositori.usu.ac.id/handle/123456789/2207