Beck, Stanley D. <br/><br/>
Insect photoperiodism / 
Stanley D. Beck. 
 - 2nd ed. 
 - New York :  Academic Press,  1980. 
 - 387 p. :  ill. ;  24 cm. 
<br/><br/>Includes index and Bibliography : p. 339-364. 
<br/><br/><label>ISBN: </label>0120843803 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photoperiodism.<br/>Insects--Physiology.