Beck, Stanley D.. <br/><br/>
Insect photoperiodism /  

 - Second Edn. /  
 - New York :   Academic Press Inc. ,   1968 
 - x,387p :  
<br/><br/><label>ISBN: </label>0-12-084380-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology 
<br/><br/><label>Dewey Class. No.: </label>K8  / M0