Yirda, A., Eshetu, M., & Kassa, F. (2021). Producing, Processing, Marketing and Hygiene of Cow Milk in the Supply Chain of Girar Jarso District of Oromia Regional State, Ethiopia. East African Journal of Sciences, 14(2), 151–162. https://doi.org/10.20372/eajs.v14i2.1172