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MLA

United States Department of Agriculture. Plant Inventory, 1919, no. 46 (41685-42383). , 1919.

APA

United States Department of Agriculture. (1919). Plant Inventory, 1919, no. 46 (41685-42383). .

Chicago

United States Department of Agriculture. Plant Inventory, 1919, no. 46 (41685-42383). , 1919.