TY  - BOOK
AU  - Rugh, Roberts
TI  - The frog: its reproduction and development
U1  - 597.89 
PY  - 1951///
CY  - New York
PB  - McGraw-Hill
KW  - Frogs--Reproduction
KW  - Amphibians--Embryology
KW  - Frogs
ER  -