Applicability of the NASA thesaurus to the file of documents indexed prior to its publication  
/University of Pittsburgh   
 - Pittsburgh:   University of Pittsburgh,    1969  
 - 205p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information sciences 
<br/><br/><label>Subjects--Index Terms: </label>Taxonomic approach  Library education  
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.4:001.816   / K9