Udomsri Showpittapornchai. 1998. Morphology development and induction of ovulation of oocytes in Rana catesbeiana. Faculty of Graduate Studies, Mahidol University;
Udomsri Showpittapornchai. (1998) Morphology development and induction of ovulation of oocytes in Rana catesbeiana . Mahidol University/Bangkok.
Udomsri Showpittapornchai. Morphology development and induction of ovulation of oocytes in Rana catesbeiana. . Bangkok:Mahidol University, 1998.
Udomsri Showpittapornchai. (1998) Morphology development and induction of ovulation of oocytes in Rana catesbeiana . Mahidol University/Bangkok.