000
00273nam a2200133Ia 4500
008
241124s9999 xx 000 0 und d
100
_a
Keiser,Gerd
245
0
_a
Optical fiber communication
250
_a
4th
260
_b
-
260
_c
0
300
_a
578
942
_c
BK
999
_c
9771
_d
9771