Singh Gurdev <br/><br/>
Information sources, services and systems 

 - Delhi  PHI learning           2013 
 - xviii,517p.  cm. 
<br/><br/><label>ISBN: </label> INR 525.00 
<br/><br/><label>Standard No.: </label>141188 
<br/><br/><label>Source: </label> 1232, 27/02/2019, Bookwell  Publications  Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Reference services<br/> Reference sources<br/>Library science
<br/><br/><label>Dewey Class. No.: </label>2:7, Q3