TY  - BOOK
AU  - Cohen Jack
AU  -  Massey Brendan
TI  - Living embryos
T2  - Pergamon international library
U1  - K9B:7, M2 
PY  - 1982///
CY  - Oxford
PB  - Pergamon Press        
KW  -  Vertebrate embryology
KW  - Zoology
ER  -