Ranganathan S.R. Ed. <br/><br/>
Depth classification and reference service  

 - Delhi  Indian library association India      1953 
<br/><br/><label>Standard No.: </label>337,818 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:51, J3