000			00319nam a2200133Ia 4500
100			_aWilliam Stallings
020			_a81-203-1240-6
250			_a5th ed
942			_cBK
245			_aData and computer communications
260			_aPrentice-Hall, New Delhi _c1999
082			_a001.64404 Sta
300			_axviii,798p ill.
999			_c31265 _d31265