A room filter for the removal of dust, pollen and air pollutants: preliminary report.
D000397:Air Pollution / Q000517:prevention & control*; D004391:Dust; D004865:Equipment and Supplies, Hospital; D005374:Filtration / Q000295:instrumentation*; D009585:Nitrogen Dioxide; D011058:Pollen; D013458:Sulfur Dioxide
D004391:Dust; D013458:Sulfur Dioxide; D009585:Nitrogen Dioxide