United States
| Firth Author | Year | Full citation | Keywords |
|---|---|---|---|
| Frenz | 1995 | Frenz D.A., M.A. Palmer, J.M.Hokanson, and R.T. Scamehorn, 1995. Seasonal characteristics of ragweed pollen dispersal in the United States. Annals of Allergy, Asthma & Immunology 75:417-422 |
Ambrosia spp., peak pollen date, pollen source, United States |