Photochemical air pollutants and their effects on men and animals. I. General characteristics and community concentrations.
D000397:Air Pollution; D002623:Chemistry Techniques, Analytical; D009566:Nitrates / Q000032:analysis; D010126:Ozone / Q000032:analysis; D013223:Statistics as Topic; D014481:United States
D009566:Nitrates; D010126:Ozone