Kumar, Krishan <br/><br/>
Reference service 

 - 4th rev ed. 
 - New Delhi  ;  Vikas Publishing House  , 1991 
 - x,431p. 
<br/><br/><label>ISBN: </label>070695414  45 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Science<br/>Reference Service
<br/><br/><label>Dewey Class. No.: </label>025.52  / KUM