10-year supplement to abridged UDC editions 
/ FID/UNESCO, 1958-1968 
 - Paris:   FID/UNESCO,   1969 
 - 173p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Supplements Documentation 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.4UDC   / K1.1