Operations research an introduction :  

 - 9th ed 
 - Noida :  Pearson ,  2013. 
 - 824p. ;   24 cm  
<br/><br/><label>ISBN: </label>9788131785942 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Subjects--Index Terms: </label>Operations research  Network models  Liner programming