Khanna/ O.R.  <br/><br/>
Work Study 

 - Delhi  Dhanpat Rai & Sons  1979 
 - 196 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>work
<br/><br/><label>Dewey Class. No.: </label>658.54