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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Stedman, R. L. - Stills, C. D. - United States. Agricultural Research Service.
    Publication info: [Washington, D.C.], Dept. of Agriculture, 1964
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Stedman, R. L. - Bilinsky, W. R. - Swain, A. P. - United States. Agricultural Research Service.
    Publication info: [Washington, D.C.?], U.S. Dept. of Agriculture, Agricultural Research Service, 1962
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library