Beck, Stanley D <br/><br/>
Animal photoperiodism:   Relationship of daylength to animal growth, development, and behavior 

 - New York:   Holt, Rinehart and Winston Inc,   1963 
 - 124p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Photoperiodism 
<br/><br/><label>Universal Decimal Class. No.: </label>591.5 Bee