Ranganathan, S. R. <br/><br/>
Reference service 
/ by S. R. Ranganathan 
 - 2nd ed. 
 - Bangalore:  Sarada Ranganathan Endowment for Library Science,  1989. 
 - 432p.; 22cm. 
<br/><br/><label>ISBN: </label>8185273219 
<br/><br/><label>Dewey Class. No.: </label>025.52  / RAN/R