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Particular Seasons
Autumn (Fall)
Subtopics:
Ragweed (Ambrosia species, cause of autumn hay fever)
Global Warming Increasing Ragweed Pollen
Ragweed Photos
worst US cities and states for allergies and asthma
superweeds bringing Roundup-Ready disillusionment
web
Tom Meersman
Minneapolis Star Tribune
2014-08-02
chamomile can intesify ragweed allergy
web
Jane E. Brody
New York Times
1995-09-06