TY  - BOOK
AU  - Rugh, Roberts.
TI  - The frog: its reproduction and development 
U1  - 597.8 
PY  - 1951///
CY  - Philadelphia
PB  - Blakiston
KW  - Frogs -- Reproduction.
KW  - Frogs -- Embryology
N1  - Includes bibliography and index
ER  -