000 00269nam a2200109Ia 4500
008 190703s9999 xx 000 0 und d
082 _a621.380414 K27
100 _aKEISER,G
245 0 _aOPTICAL FIBER COMMUNICATIONS
260 _aNEW YORK
_bMcGraw-Hill
942 _cBB
_2DDC
999 _c5368
_d5368