Gupta, P. K . <br/><br/>
An introduction to operational research / 
P. K .Gupta; D. S Hira 
 - 1st.ed. 
 - Delhi :  s.chand & company ltd. ,  1995 
 - 453 p. :  ill. ;  25 cm. 
<br/><br/> include index 
<br/><br/><label>ISBN: </label>0582013496 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operations research
<br/><br/><label>Dewey Class. No.: </label>658.4034  / GUI 1995