Learning and working / 
edited by Zaghboul Morsy. 
 - Paris:   Unesco,  1979. 
<br/><br/><label>ISBN: </label>9231016849 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning
<br/><br/><label>LC Class. No.: </label>LB1060  / LEA 1979