Proceedings. 

 - New Delhi   National Productivity council India        1977 
 - viii, 446p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>X9(HZ):88.2.N7, L7