000 00277nam a22001217a 4500
999 _c6199
_d6199
003 OSt
005 20210319113833.0
008 210319b ||||| |||| 00| 0 eng d
100 _aSENIOR, JOHN, M.
245 _aOPTICAL FIBER COMMUNICATIONS
260 _bPEARSON
942 _2ddc
_cGE