Harker, Janet E. <br/><br/>
The physiology of diurnal rhythems / 
Janet E. Hardker. 
 - London :  Cambridge,  1964. 
 - 114 p. ;  22 cm. 
 - Cambridge monographs in experimental biology ;  13 .
<br/><br/>Includes index and bibliographical references. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological rhythms.