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120117n1999 II |||gr||||Z||||||eng
040
_a
MAIN
041
_a
English
082
_a
530 ARO
100
_a
ARORA, C. L.
245
_a
OPTICS
260
_a
NEW DELHI
_b
S.CHAND & COMPANY
_c
1999
300
_a
271.
653
_a
Physics
942
_c
BK
999
_c
9638
_d
9638