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  1. By: United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Division of Plant Exploration and Introduction. - United States. Bureau of Plant Industry. Division of Foreign Plant Introduction. - United States. Office of Foreign Plant Introduction. - United States. Office of Foreign Seed and Plant Introduction.
    Publication info: [Washington, D.C.] :Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture,[1922?-
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library