New Orleans asthma. 3. Semiquantitative aerometric pollen sampling, 1967 and 1968.
D000397:Air Pollution / Q000032:analysis*; D001249:Asthma / Q000209:etiology*; D004781:Environmental Exposure; D006801:Humans; D008145:Louisiana; D006109:Poaceae; D011058:Pollen / Q000032:analysis*; D012621:Seasons; D014197:Trees