Farmer’s perception on artificial insemination under the mandatory pregnant cow program (UPSUS SIWAB) in West Nusa Tenggara, IndonesiaI Putu Cakra Putra Adnyana, LuhGde Sri Astiti, Nurul Agustini, Hijriyah and Nurul HilmiatiE3S Web Conf., 306 (2021) 02029DOI: https://doi.org/10.1051/e3sconf/202130602029