Puspa Yoga A, Syahni R, Hasnah H. TECHNICAL EFFICIENCY OF COFFEE FARMING IN LIMA PULUH KOTA REGENCY, WEST SUMATRA PROVINCE. Jurnal Ekonomi [Internet]. 2023 Aug. 11 [cited 2026 May 11];12(3):1786-9. Available from: https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/2341