Indira Gandhi National Open University <br/><br/>
Reference and Information sources;Non document sources 

 - Delhi  IGNOU  2000 
 - 37 P. 
<br/><br/><label>ISBN: </label>817605612X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Science
<br/><br/><label>Dewey Class. No.: </label>020 Ind