000			00361nam a2200145Ia 4500
100			_aHalsall, Fred
020			_a981-233-892-7
250			_a4th ed
654			_aComputer Science
942			_cBK
245			_aData communications, computer networks and open systems
260			_aAddison-Wesley, Harlow _c1996
082			_a001.64404 Hal
300			_axvi,907
999			_c29027 _d29027