Adopsi petani kopi dalam pengembangan perkebunan kopi rakyat : kasus petani kopi dikecamatan Bandar, kabupaten Aceh Tengah / YUSNADI text Bogor : IPB, 1992 ind Thesis (MS)- Institut Pertanian Bogor, 1992 Bibl. p. 92-95 Thesis (MS)- Institut Pertanian Bogor, 1992 Bibl. p. 92-95 COFFEA FARMERS ACEH