000			00323cam a2200133ua 4500
020			_a9788122427677
082			_a621.3192 _bROY/NE
100			_aRoy, Choudhury.
245			_aNetworks and systems /
250			_a1 / 2
260			_aNew Delhi : _bNew Age International Ltd , _c1996.
300			_a926 ; .
942			_cBK
999			_c255432 _d255432