Dhawan, K S . <br/><br/>
Readings in library science:  Principles of information retrieval./ 
K S Dhawan 
 - New Delhi :   Commonwealth Publishers,   2001 
 - V, 275 p. (vol 4). ;   22 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>8171696457 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Library science.
<br/><br/><label>Dewey Class. No.: </label>20  / DHR