New York State Department of Agriculture and Markets.
Virginia Department of Forestry.
New York City Department of Health.
New York Invasive Species Clearinghouse.
Cornell University. Forest Health and Invasive Non-native Forest Pests.
University of New Hampshire. Cooperative Extension; New Hampshire Department of Agriculture, Markets & Food.
North Dakota Department of Trust Lands.
New York State Department of Environmental Conservation.
New York Department of Environmental Conservation.
Cornell University. New York State Integrated Pest Management Program.
North Dakota Department of Agriculture.
Utah Department of Agriculture and Food.
University of New Hampshire. Cooperative Extension.
Virginia Department of Conservation and Recreation.