TY  - BOOK
AU  - Lofts,Brian
TI  - Animal photoperiodism
T2  - Institute of Biology. Studies in biology
SN  - 713122935
U1  - 571.77 23
PY  - 1970/// [reprinted 1978]
CY  - London
PB  - Arnold
KW  - Photoperiodism
N1  - Bibliography: p. [63-64]
ER  -