"Based on work carried out jointly by Beltsville Forest Insect Laboratory Division of Forest Insect Research, Forest Service, and Agricultural Engineering Research Division, Agricultural Research Service, USDA."
Includes bibliographical references
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Maksymiuk, Bohdan, 1926-; United States. Agricultural Research Service. Agricultural Engineering Research Division; United States. Forest Service. Division of Forest Insect Research. Forest Insect Laboratory (Beltsville)