TY  - BOOK
AU  - Fretwell,Stephen D.
TI  - Populations in a seasonal environment
SN  - 0691081069 (pbk.)
PY  - 1972///
CY  - Princeton, N.J.
PB  - Princeton University Press
KW  - Animal populations
KW  - Phenology
N1  - References : p. 207-214
ER  -