Sumantri, Sumantri, Arti yusdiarti, and Himmatul Miftah. 2020. “STUDI KELAYAKAN INVESTASI KOPI ROBUSTA (COFFEA CANEPHORA)”. JURNAL AGRIBISAINS 6 (1):39-49. https://doi.org/10.30997/jagi.v6i1.2805.