World of learning 1977-78 
/ Europa Publication Limited 
 - 8th 
 - London:   Europa Publication Limited,   1977 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Subjects--Index Terms: </label>Science  International organization  
<br/><br/><label>Universal Decimal Class. No.: </label>R 37(4/9(058.7)   / L7