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MLA

Luginbill, Philip. The southern corn rootworm and farm practices to control it. U.S. Dept. of Agriculture, 1918.

APA

Luginbill, Philip. (1918). The southern corn rootworm and farm practices to control it. U.S. Dept. of Agriculture.

Chicago

Luginbill, Philip The southern corn rootworm and farm practices to control it. U.S. Dept. of Agriculture, 1918.