Qualitative techniques in management 
Vohra, N. D 
 - 4th ed. 
 - New Delhi,INDIA  McGraw Hill Education  2010 
 - xvi,1063p.:  ill; 
<br/><br/> Includes bibliography and index. 
<br/><br/><label>ISBN: </label>9789351340157 
<br/><br/><label>LC Class. No.: </label>HD30.25  / .V64 2010