Ranganathan, R.N <br/><br/>
Reference service/ 
by S R Ranganathan 
 - Newdelhi:  Ess Ess Publications,  1940. 
 - 432p.  23 c.m 
 - Ranganathan series in library science, 8. .
<br/><br/><label>ISBN: </label>8170004659 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries) Bibliotheques.--Services de reference.
<br/><br/><label>Dewey Class. No.: </label>025.52  / RAN/R