Selected and annotated bibliográphy of recent works nº27. 

 - Paris:  Unesco,  1980 
<br/><br/><label>LCCN: </label>true true 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliográfias
<br/><br/><label>Universal Decimal Class. No.: </label>016 UNE se