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  1. By: Smith, Edwin. - Wright, T. R. (Theodore R.), - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Wenatchee, Wash, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, 1951
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Wright, T. R. (Theodore R.), - Smith, Edwin. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Wenatchee, Wash, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, 1951
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Redit, W. H. (Walter Henry), - Wright, T. R. (Theodore R.), - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Beltsville, Md, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, 1949
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Smith, Edwin. - Adams, David. - Wright, T. R. (Theodore R.), - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Beltsville, Md, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, 1949
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Wright, T. R. (Theodore R.), - Smith, Edwin,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1954
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Wright, T. R. (Theodore R.), - Smith, Edwin. - United States. Agricultural Research Administration. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Wenatchee, Wash, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, [1948]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Smith, Edwin. - Wright, T. R. (Theodore R.), - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
    Publication info: Wenatchee, Wash, U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, 1948
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library