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MLA

Kellerman, Karl F. (Karl Frederic), and T. Ralph (Thomas Ralph) Robinson. Progress in legume inoculation. U.S. Dept. of Agriculture, 1908.

APA

Kellerman, Karl F. (Karl Frederic), and Robinson, T. Ralph (Thomas Ralph). (1908). Progress in legume inoculation. U.S. Dept. of Agriculture.

Chicago

Kellerman, Karl F. (Karl Frederic), and T. Ralph (Thomas Ralph) Robinson. Progress in legume inoculation. U.S. Dept. of Agriculture, 1908.