000
00261nam a22001337a 4500
003
SGT
020
_a
9789339220907
082
_b
GHA
100
_a
GHATAK AJOY
245
_a
OPTICS
250
_a
6TH
260
_b
TATA MC GRAW HILL
_c
2018
942
_2
ddc
_c
BK
_0
4
999
_c
16428
_d
16428