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

 - 2 
 - Academic Press,  New York  1980 
 - 
 - .
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects (Entomology)
<br/><br/><label>Dewey Class. No.: </label>595.7  BEC-I2