TY - BOOK TI - Secondary sex characters of Chinese frogs and toads VL - v.22:no.2 (1936) UR - https://www.biodiversitylibrary.org/item/21240 CY - Chicago PY - 1936 AU - Liu, Chengzhao, KW - Amphibians KW - China KW - Frogs KW - Sex (Biology) KW - Toads ER -