Thomas, Brain. <br/><br/>
Photoperiodism in plants   
by Brian Thomas and Daphne Vince-Prue 
 - 2nd ed. 
 - San Diego  Academic Press  1997 
 - xv, 428p. 
<br/><br/><label>ISBN: </label>0126884900 
<br/><br/><label>Dewey Class. No.: </label>581.1929  / N97