TY  - BOOK
AU  - Farner,Donald Stanley
TI  - Photoperiodism in animals
T2  - BSCS pamphlets; 15
AV  - PAM QL753.F35 
PY  - 1964///
CY  - Boston : 
PB  - Heath and Company
KW  - Photoperiodism
KW  - Animals
KW  - habits and behavior of
ER  -