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

 - New Delhi  Dhanpat Rai And Sons.  1977 
 - 327p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MECHANICAL_PRODUCTION
<br/><br/><label>Dewey Class. No.: </label>"658,1"