Rosiles, V., Galina, C., Maquivar, M., Molina, R., & Estrada, S. (2005). Ultrasonographic screening of embryo development in cattle (Bos indicus) between days 20 and 40 of pregnancy.

Rosiles, V.A., C.S Galina, M. Maquivar, R. Molina, و Sandra Estrada. Ultrasonographic Screening of Embryo Development in Cattle (Bos Indicus) between Days 20 and 40 of Pregnancy. 2005.

Rosiles, V.A., et al. Ultrasonographic Screening of Embryo Development in Cattle (Bos Indicus) between Days 20 and 40 of Pregnancy. 2005.