TY  - BOOK
AU  - Bullough,William Sydney
TI  - Vertebrate sexual cycles
T2  - Methuen's monographs on biological subjects
AV  - QP251 .B76
U1  - 591.56 
PY  - 1951///]
CY  - London, New York
PB  - Methuen, Wiley
KW  - Reproduction
KW  - Local
KW  - Vertebrates
ER  -