Asmara A, Purnamadewi YL, Lubis D. KERAGAAN PRODUKSI SUSU DAN EFISIENSI USAHA PETERNAKAN SAPI PERAH RAKYAT DI INDONESIA. jma [Internet]. 2016Mar.6 [cited 2024Nov.21];13(1):14. Available from: https://journal.ipb.ac.id/index.php/jmagr/article/view/12255