000 00287nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.38275
100 _aJohn Gowar
245 0 _aOptical Communication Systems
250 _a2
260 _bPrentice Hall Of India
_c2004
942 _cBK
999 _c5380
_d5380