000
00295nam a2200133Ia 4500
008
220201s2018 xx 000 0 eng d
100
_a
GUPTA P K
245
0
_a
OPERATIONS RESEARCH
250
_a
7
260
_a
DELHI
_b
S CHAND PUB
_c
2018
300
_a
1498
700
_a
HIRA D S
942
_2
ddc
999
_c
94201
_d
94201