Gupta,R.C. <br/><br/>
Statistical nuality control and quality management 
R. C. Gupta. 
 - 9.ed. 
 - New Delhi :  Khanna Pub.  c1979 
<br/><br/><label>ISBN: </label>978817409114 
<br/><br/><label>Dewey Class. No.: </label>658.568  / G976s