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		Suarjana, I., 		Widia, I., & 		Darmawan, K.
(2017).
 Penentuan Nilai Kontrak Asuransi Usaha Tani Tanaman Kopi Arabika  Berbasis Indeks Harga Internasional.
<em>Jurnal BETA (Biosistem Dan Teknik Pertanian), 5</em>(2), 1-8.
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