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By: United States. Bureau of Plant Industry. Library. - Allen, Jessie M. (Jessie May) - Oberly, Eunice Rockwood, - United States. Department of Agriculture. Library,Edition:Publication info: Washington,D.C, U.S. Dept. of Agriculture Library, 1922Volume: no.2Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections: