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Controlling insects in flour mills / R.T. Cotton, J.C. Frankenfeld, and G.A. Dean. (Circular)

Controlling insects in flour mills / R.T. Cotton, J.C. Frankenfeld, and G.A. Dean. (Circular)
Paper図書
U.S. Dept. of Agriculture1945.<632.94-C851c>
National Diet Library
  • Subject HeadingFlour-mills -- Fumigation. Grain -- Storage -- Diseases ...

Industrial fumigation against insects / E.A. Back, R.T. Cotton. (Circular)

Industrial fumigation against insects / E.A. Back, R.T. Cotton. (Circular)
Paper図書
U.S. Dept. of Agriculture1942.<632.94-B126i>
National Diet Library
  • Subject HeadingBuildings -- Fumigation. Flour-mills -- Fumigation. Insect pests -- Control. Food...

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