Soybean Aphid Watch (Map)
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Map of the United States where states and provinces have been affected by soybean aphids.
Citation: U.S. Department of Agriculture. (2002). Soybean Aphid Watch. [Archived Webpage]. https://web.archive.org/web/20021207224825/http://www.pmcenters.org/Northcentral/Saphid/aphidindex.htm
Citation: U.S. Department of Agriculture. (2002). Soybean Aphid Watch. [Archived Webpage]. https://web.archive.org/web/20021207224825/http://www.pmcenters.org/Northcentral/Saphid/aphidindex.htm
