Ely Brand, Fifian Permata Sari, Yetty Oktarina. THE STRATEGY TO INCREASE ROBUSTA COFFEE PRODUCTION AT OGANKOMERING ULU REGENCY OF SOUTH SUMATRA PROVINCE. IJSS [Internet]. 2022 Jun. 2 [cited 2025 Jul. 5];2(1):1095-102. Available from: https://mail.bajangjournal.com/index.php/IJSS/article/view/2305