Sleep and biological rhytms :  basic mechanisms and applications to psychiatry / 
edited by Jacques Montplaisir and Roger Godbout. 
 - New York :  Oxford University Press,  1990. 
 - 240 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0195058259  RM134.25 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological clocks.<br/>Periodicity.<br/>Sleep--Physiology.