Lofts, Brian. <br/><br/>
Animal photoperiodism / 
by Brian Lofts. 
 - London :  Edward Arnold Publishers,  1970. 
 - 64 p., 4 plates. : 
<br/><br/><label>ISBN: </label>0713122943 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photoperiodism.
<br/><br/><label>Dewey Class. No.: </label>590  / An