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Oregon Department of Agriculture. Plant Division. Noxious Weed Control.
University of California - Riverside. Center for Invasive Species Research.
San Bernardino County (California). Department of Public Health.
See also: Mosquito & Vector Control for more resources
Oregon Department of Agriculture.
Utah Department of Agriculture and Food.
California Department of Parks and Recreation. Division of Boating and Waterways.
Alabama Department of Conservation and Natural Resources.
New Hampshire Fish and Game Department.