Walker, James. <br/><br/>
Human aspects of shiftwork / 
James Walker. 
 - London :  Institute of Personnel Management,  1978. 
 - 214 p. ;  18 cm. 
<br/><br/><label>ISBN: </label>0852921659 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shift systems.