Weihrich, Heinz <br/><br/>
Biological rhythms and photoperiodism in plants 
edited by P.J. Lumsden, A.J. Millar. 
 - Oxford  BIOS Scientific Publishers  1998 
 - xiv, 284p., ill.; 22cm 
 - (Environmental plant biology series) .
<br/><br/><label>ISBN: </label>1-85996-216-5. 
<br/><br/><label>Dewey Class. No.: </label>581.13342  / B54B