Lofts, Brian <br/><br/>
Animal photoperiodism 

 - London :  Edward Arnold,  1970 
 - 64 p. :  ill., 4 plates. ;  23 cm. 
 - Institute of Biology's studies in biology ;  no.25. .
<br/><br/>Bibliography: p. 63-64 
<br/><br/><label>ISBN: </label>0713122943 
<br/><br/><label>LCCN: </label>78-858349 //r86 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photoperiodism