Singh, Gurdev <br/><br/>
Information Sources, Services and Systems 
/ by Gurdev Singh 
 - Delhi:   PHI Learning Private Limited,   2013. 
 - xviii, 517p. 
<br/><br/><label>ISBN: </label>9788120346390 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dictionaries<br/>Encyclopaedia<br/>Information Sources<br/>Library and Information Science
<br/><br/><label>Dewey Class. No.: </label>020  / SIN/I