Hasby Puarada S, Nadia Syafrilia Gurning R. AN ANALYSIS OF MARKETING EFFICIENCY OF BEEF CATTLE BREEDERS PERCUT SEI TUAN DISTRICT, DELI SERDANG REGENCY, NORTH SUMATERA. MORFAI [Internet]. 2021 Nov. 22 [cited 2025 Jun. 21];1(2):145-54. Available from: https://radjapublika.com/index.php/MORFAI/article/view/47