000			00368nam a2200157Ia 4500
008			150723s9999 xx 000 0 und d
020			_a432
082			_a 621.3827 BLA-O
100			_a Black, Uyless
245			_a Optical networks
260			_b Pearson Education South Asia
260			_c2007
300			_a351
650			_a Optical communication
942			_cBK
999			_c339 _d339