000			00347nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a9.78813E+12
082			_aAL-
082			_b10 & AL
100			_a"Black, Uyless"
245		0	_aOptical Networks
260			_aNew Delhi
260			_bPearson Education
260			_c2002
300			_a351
999			_c19733 _d19733