000 00324nam a2200133Ia 4500
008 210901s1987 xx 000 0 eng d
082 _a621.3692 KEI
100 _aKeiser, Gerd
245 0 _aOptical fiber communications
260 _aLondon
_bMcGraw Hill
_c1987
300 _a318
650 _aEngineering
942 _2ddc
_cB
999 _c32134
_d32134