title: On the cover-green ash.
authors.forename: Richard W
authors.initials: RW
authors.lastname: Weber
mesh_terms: D001249:Asthma / Q000276:immunology*; D002170:Canada; D003429:Cross Reactions / Q000276:immunology; D035264:Flowers / Q000033:anatomy & histology / Q000276:immunology / Q000502:physiology; D031661:Fraxinus / Q000033:anatomy & histology / Q000276:immunology / Q000502:physiology*; D006801:Humans; D011058:Pollen / Q000009:adverse effects / Q000276:immunology; D054817:Pollination; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology*; D014481:United States