Directory of international scientific organizations  
/ UNESCO 
 - 2nd ed.  
 - Paris:   UNESCO,   1953 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Directory 
<br/><br/><label>Subjects--Index Terms: </label>International scientific  
<br/><br/><label>Universal Decimal Class. No.: </label>R 061:5(058)  / J3