000
nam a22 7a 4500
999
_c
12738
_d
12738
020
_a
9788121902816
082
_a
658.4034
_b
GUP
100
_a
GUPTA PREM KUMAR
245
_a
OPERATIONS RESEARCH
250
_a
1ST
260
_a
NEW DELHI
_b
S.CHAND AND COMPANY
_c
2016
300
_a
1498
700
_a
HIRA D.S
942
_c
GEN_BK