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  1. By: United States. Bureau of Plant Industry. - Cook, O. F. (Orator Fuller), - Dillman, Arthur Childs. - Garver, Samuel. - Oakley, Russell Arthur.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Plant Industry,1913.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library