Evans, L.T. <br/><br/>
Daylength and the flowering of plants / 
L.T. Evans 
 - California :  W.A Benjamin, Inc,  1975 
 - 122 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0805314652 
<br/><br/><label>LCCN: </label>75-005308