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  1. By: University of Minnesota. Agricultural Experiment Station.
    Publication info: St. Paul, Minn, The Pioneer Press Company, -1923
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Minnesota. State Entomologist. - University of Minnesota. Agricultural Experiment Station.
    Publication info: St. Anthony Park, Minn, Agricultural Experiment Station, 1903-1916
    Holding Institution: Smithsonian Libraries and Archives
  3. By: Minnesota. State Entomologist. - University of Minnesota. Agricultural Experiment Station.
    Publication info: St. Paul, Minn, Agricultural Experiment Station,
    Holding Institution: Smithsonian Libraries and Archives
  4. By: Smith, William G. - Nesom, George H. - Roth, E. G. - United States. Bureau of Soils. - University of Minnesota. Agricultural Experiment Station.
    Publication info: Washington, Govt. Print. Office, 1918
    Holding Institution: University of California Libraries