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United States Department of Agriculture. "Plant Inventory, 1981, No. 185 (414156-420806)." ,

APA

United States Department of Agriculture, U. States Department of Agriculture. (0000). Plant Inventory, 1981, no. 185 (414156-420806).

Chicago

United States Department of Agriculture. "Plant Inventory, 1981, no. 185 (414156-420806)" (1981):