Biological rhythms / 
edited by Jurgen Aschoff 
 - New York :  Plenum Press,  1981 
 - 563 p. :  ill. ;  27 cm. 
 - Handbook of behavioral neurobiology  v. 4 .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0306405857 
<br/><br/><label>LCCN: </label>80-021037 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological rhythms