@book{bhlitem29929, title = {The frog; its reproduction and development }, copyright = {No known copyright restrictions as determined by scanning institution}, url = {https://www.biodiversitylibrary.org/item/29929}, note = {https://www.biodiversitylibrary.org/bibliography/6867}, publisher = {Philadelphia, Blakiston, 1951}, author = {Rugh, Roberts,}, year = {1951}, pages = {360}, keywords = {Batrachia|Embryology|Frogs}, }