000			00335nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a9.78E+12
082			_a4
082			_b66 POU
100			_a"Poulton, Simon"
245		0	_aPacket Switching And X.2
260			_aLondon
260			_bPitman
260			_c1989
300			_a236
999			_c34029 _d34029