Vettical, B.S. 2016. In Vitro Fertilizability of Oocytes Using Fresh, Frozen and Epididymal Spermatozoa from Crossbred Bulls in the Tropics. International Journal of Applied Sciences and Biotechnology. 4, 2 (Jun. 2016), 166–171. DOI:https://doi.org/10.3126/ijasbt.v4i2.14265.