000 00253nam a2200097 4500
245 _aAnimal photoperiodism
_cby Brian Lofts
100 _aLofts, Brian
260 _aLondon
_bELBS & Edward Arnold
_c1970
300 _a62p.:ill.; 22cm.
082 _a592.13342
_bLOF
999 _c26382
_d26382