000 00286nam a2200121Ia 4500
008 220201s1991 xx 000 0 eng d
082 _a621.38275
_bGER
100 _aGerd, Keiser
245 0 _aOptical fiber communication
260 _bMcGraw Hill
_c1991
300 _a461
942 _2ddc
999 _c86753
_d86753