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    • Perubahan Tata Guna Lahan Kopi Robusta di Kabupaten Dairi 

      Marsya, Nanda (Universitas Sumatera Utara, 2019)
      Robusta coffee farming in Dairi Regency has started to be abandoned by many people and been replaced with other plants. The study examines changes in the use of Robusta coffee land in Dairi Regency. This research was ...