000			00493nam a22001691a 4500
008			220501s2004 xx 000 0 eng d
020			_a9789812549662
082			_a004.6 _bSHA-U
100			_aShay, William A.
245			_aUnderstanding data communications and networks / _bWilliam A. Shay
260			_aAustralia : _bThomson Books, _c2004.
300			_axxv, 766 p.;
500			_aIncludes index
650			_aComputer networks
650			_aData transmission systems
942			_2ddc _cBK
999			_c19245 _d19245