Putu Jenny Natasia, Putu Yudi Setiawan. Optimization Of Production Combination in Umah Lokal Coffee Roastery. IJEMA [Internet]. 2025 Apr. 8 [cited 2025 Dec. 5];2(2):340-5. Available from: https://international.areai.or.id/index.php/IJEMA/article/view/637