Scientific and technical documentation centres 
/ UNESCO 
 - Paris:   UNESCO,   1965 
 - 55p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information science
<br/><br/><label>Subjects--Index Terms: </label>Translation service Library science 
<br/><br/><label>Universal Decimal Class. No.: </label>D 002.6:5/6(4/9)   / K5