000			00374nam a2200181Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
082			_a621381
100			_aRobert A. R.
245		0	_aData networks
260			_aNULL
260			_bPrentice Hall Of India.
260			_c1997
300			_a556p.
365			_b150
650			_aETC
942			_cDBK
999			_c26257 _d26257