Comprehensive Prevention Of Covid 19 Services on Dairy Farms, Namorambe Subdistrict, Deli Serdang Regency. J.Saintech Transf. [Internet]. 2022 Mar. 17 [cited 2025 Dec. 7];4(2):119-26. Available from: https://talenta.usu.ac.id/jst/article/view/7508