The world of learning 1989. 

 - 39th ed. 
 - London :   Europa,  1989. 
 - 1988 p. ;  30 cm. 
<br/><br/><label>ISBN: </label>0946653135 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning
<br/><br/><label>Dewey Class. No.: </label>001.2  / EUW 1989