000 00286nam a2200121Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
020 _a140267077
082 _a621.3827 KEI
100 _aKeiser, Gerd
245 0 _aOptical fiber communication
260 _bLondon
300 _a291p.
_b0
999 _c136530
_d136530