TY  - BOOK
AU  - Rugh,Roberts
TI  - The frog: its reproduction and development 
AV  - QL959 .R86
U1  - 597.8 
PY  - 1951///
CY  - New York
PB  - Mc Graw-hill Book Company
KW  - Embryology
KW  - Amphibians
KW  - Frogs
N1  - Bibliography: p. 311-320
ER  -