ragweed population
| Firth Author | Year | Full citation | Keywords |
|---|---|---|---|
| Sneiderman | 2007 | Sneiderman P., 2007. Study of Ragweed Offers Hope for Allergy Sufferers. Medical News Today. 26 Sept, 2007. http://www.medicalnewstoday.com/articles/83570.php |
ragweed, pollen concentration, ragweed population, invasive weed |