dcsimg

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  1. Notes on five North American Buffalo gnats of the genus Simulium /
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1916.
  2. Bulletin of the U.S. Department of Agriculture.
    Publication info: [Washington, D.C.?] :Supt. of Docs., G.P.O.,1913-1923.