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U.S. Government Printing Office. Electronic Code of Federal Regulations.
USDA. ARS. Tellus.
The 20-year fight against plum pox – a serious agricultural disease capable of devastating stone fruits like peaches, apricots, cherries, and almonds – is finally over, thanks to a cooperative effort by the Agricultural Research Service and their partners.
Michigan State University. Integrated Pest Management Program.
New York Invasive Species Clearinghouse.
USDA. APHIS. Plant Protection and Quarantine.
New York Department of Agriculture and Markets.