Ward, Ritchie R. <br/><br/>
The living clocks 
Richie R. Ward. 
 - London,  Collins:  c1972 
 - 319 p. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>000211481X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological rhythms.
<br/><br/><label>Dewey Class. No.: </label>574.18