000 00261nam a2200109Ia 4500
008 230411s9999 xx 000 0 und d
082 _a621.38275
_bGOW
100 _aGOWAR (JOHN
245 0 _aOptical Communication Systems
260 _bPHI
_aNEW DELHI
942 _cBB
999 _c8143
_d8143