Gupta P K <br/><br/>
Problems in operation research  Principles and solutions 
Prem Kumar Gupta  
 - New delhi   S chano and company   1991 
 - V,1078p,ill  Hbk 
<br/><br/><label>ISBN: </label>8121909686 
<br/><br/><label>LC Class. No.: </label>T576G81991  / 0039475