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Suarjana, I Wayan, I Wayan Widia, & Komang Darmawan.
" Penentuan Nilai Kontrak Asuransi Usaha Tani Tanaman Kopi Arabika  Berbasis Indeks Harga Internasional." <em>Jurnal BETA (Biosistem dan Teknik Pertanian)</em> [Online], 5.2 (2017): 1-8. Web.  4 Sep. 2026