Adelia K, Winarno ST, Tondang IS. Analisis Pengendalian Kualitas Green Beans Kopi Menggunakan Metode Statistical Process Control (SPC) di Kopi Bontugu Trawas. JEMS [Internet]. 2026 Jul. 11 [cited 2026 Aug. 5];8(4):1400-5. Available from: https://jems.ink/index.php/JEMS/article/view/512