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MLA

Ball, Carleton R. (Carleton Roy). Better grain-sorghum crops. U.S. Dept. of Agriculture, 1911.

APA

Ball, Carleton R. (Carleton Roy). (1911). Better grain-sorghum crops. U.S. Dept. of Agriculture.

Chicago

Ball, Carleton R. (Carleton Roy) Better grain-sorghum crops. U.S. Dept. of Agriculture, 1911.