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  1. Investigations of the white-pine blister rust
    Publication info: Washington, Govt. print. off, 1922
  2. Investigations of the white-pine blister rust
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
  3. Bulletin of the U.S. Department of Agriculture
    Publication info: [Washington, D.C.?], Supt. of Docs., G.P.O, 1913-1923