000 00284nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aJohn Gowar
245 _aOptical Communication Systems
260 _bDelhi:PHI
_c2002
300 _a696p.
650 _aElectronic
999 _c1071
_d1071