000			00347nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a70840865
082			_a621
082			_b381532
100			_a"Bowron, P"
245		0	_aActive Filters For Commu
260			_aNew York
260			_bMcGraw Hill
260			_c1979
300			_a"VIII, 284"
999			_c26569 _d26569