Studies of shiftwork / 
edited by W.P. Colquhoun and J. Rutenfranz. 
 - London :  Taylor & Francis,  1980. 
 - xi,468 pages :  illustrations ;  26cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0850662109 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shift systems.