000			00307nam a2200133Ia 4500
008			230913s9999 xx 000 0 und d
082			_a4.65 DER
100			_aDerfler, Frank J
245		0	_aHow Networks Work
260			_bT M P PUB
260			_c1999
300			_a212
650			_aComputers Engineering
999			_c147082 _d147082