dr.a.k  gupta  s.ksarkar <br/><br/>
systems analysis ,data processing and quantitative techniques 

 - newdelhi  galgotia publications pvt.ltd  1997 
<br/><br/><label>ISBN: </label>81-7515-104-8 
<br/><br/><label>Dewey Class. No.: </label>005.1  / GUP/S