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  1. By: Magness, J. R. (John Robert), - United States. Bureau of Plant Industry.
    Publication info: [United States], Bureau of Plant Industry, September 17, 1929
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Magness, J. R. (John Robert),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Magness, J. R. (John Robert), - Taylor, George F. (George Frederick),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1925
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Ballard, W. S. (William Salisbury), - Hawkins, Lon A. (Lon Adrian), - Magness, J. R. (John Robert),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Haller, M. H. (Mark Hughlin), - Magness, J. R. (John Robert),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1944
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Magness, J. R. (John Robert), - Diehl, H. C. (Helmut Charles), - Haller, M. H. (Mark Hughlin),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1926
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Magness, J. R. (John Robert), - United States. Bureau of Plant Industry.
    Publication info: [United States], [Bureau of Plant Industry], February 10, 1930
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Magness, J. R. (John Robert), - Carrick, D. B. (Doak Bain),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1926
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library