Chanonya Chaiwongroj. (1999) Maturation of Rana tigerina ovarian follicles : correlation between ultrastructural changes, induction of Germinal Vesicle Breakdown (GVBD), and steroid hormone production. Mahidol University,:ม.ป.ท.Chanonya Chaiwongroj. 1999. Maturation of Rana tigerina ovarian follicles : correlation between ultrastructural changes, induction of Germinal Vesicle Breakdown (GVBD), and steroid hormone production. ม.ป.ท.:Mahidol University,;Chanonya Chaiwongroj. Maturation of Rana tigerina ovarian follicles : correlation between ultrastructural changes, induction of Germinal Vesicle Breakdown (GVBD), and steroid hormone production. ม.ป.ท.:Mahidol University, 1999. Print.