000
nam a22 7a 4500
999
_c
14764
_d
14764
020
_a
9788121902816
082
_a
658.4034
_b
GUP
100
_a
GUPTA PREM KUMAR
245
_a
OPERATION RESEARCH
260
_a
NEW DELHI
_b
S.CHAND AND CO
_c
2016
300
_a
1498
_b
P.B
700
_a
HIRA D.S
942
_c
LEN_BK