000
00231nam a2200097Ia 4500
008
230401s9999 xx 000 0 eng d
100
_a
GUPTA (NAVNEET)
245
0
_a
OPTICAL COMMUNICATION
260
_b
DHANPAT RAI
942
_2
ddc
_c
BTECH
999
_c
6288
_d
6288