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020 _aNULL
035 _a23779
082 _a621.382
_BKEI
100 _aKeiser, Gerd
245 0 _aOptical Fiber Communications
250 _a-
260 _aBoston
_bMcGraw Hill International Book Company
500 _a0
650 _aCodes , Systems , Types
942 _cBK
999 _c23779
_d23779