TY  - BOOK
AU  - Gupta,Prem Kumar
AU  - Hira,D.S.
TI  - Operations research / 
SN  - 9788121902816
U1  - 003 GUO 23
PY  - 2004///
CY  - New Delhi
PB  - S.Chand & Company Ltd
KW  - Operations Research
N1  - Includes bibliographical references and index
ER  -