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MLA

United States Department of Agriculture. Plant Inventory, 1955, no. 156 (161667-172310). , 1955.

APA

United States Department of Agriculture. (1955). Plant Inventory, 1955, no. 156 (161667-172310). .

Chicago

United States Department of Agriculture. Plant Inventory, 1955, no. 156 (161667-172310). , 1955.