TY  - BOOK
AU  - Witschi,Emil
TI  - Development of vertebrates
AV  - QL959 .W59
U1  - 591.3 
PY  - 1956///
CY  - Philadelphia
PB  - Saunders
KW  - Embryology
KW  - Vertebrates
KW  - Local
N1  - Includes bibliography
ER  -