000			00413nam a2200145Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a81-7808-098-2
082			_a005.71 HAL
100			_aHalsall, Fred
245		0	_aData communications computer networks and open systems
250			_a4th
260			_aPearson education asia _bNew Delhi _c2003
300			_b375
650			_aDATA COMMUNICATION _91124
999			_c169576 _d169576