000 00291nam a2200133Ia 4500
100 _aKEISER , GERD
020 _a0-07-100785-7
365 _cRS
365 _d1
942 _cENGBK
245 _aOptical Communications Systems
260 _bThe Graw- hill
_c1991
_aLONDON
300 _aXX+461pp
999 _c10754
_d10754