Linn, W S Effects of exposure to 4 ppm nitrogen dioxide in healthy and asthmatic volunteers. [electronic resource] - Archives of environmental health - 234-9 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0003-9896 Standard No.: 10.1080/00039896.1985.10545925 doi Subjects--Topical Terms: AdultAirway Resistance--drug effectsAsthma--physiopathologyBlood Pressure--drug effectsFemaleHumansMaleNitrogen Dioxide--toxicityPhysical Exertion