000			00364nam a22001337a 4500
020			_a9812400508
082			_a004.6 _bSHA/UND
100			_aShay, William A. _91524
245			_aUnderstanding Data Communications & Networks _cWilliam A. Shay.
250			_a2nd ed.
260			_aBoston : _bVikas Publishing House, _cc1999.
300			_axx, 711 p.: _b[27]
942			_cBK
999			_c1202 _d1202