Monga , g.s <br/><br/>
Mathematics and statistic for economic 
G.S  Mongal 
 - New delhi  Vikas publishing  1975 
 - xiv  hbk 
<br/><br/><label>ISBN: </label>070691515 
<br/><br/><label>LC Class. No.: </label>QA 276 .M6 . 1975