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By: Flitters, N. E. - Messenger, P. S. - Husman, C. N. - United States. Agricultural Research Service.Edition:Publication info: [Beltsville, Md.], U. S. Dept. of Agriculture, Agricultural Research Service, 1956Volume: no.33-33Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Climatic factors Insects Invertebrates as laboratory animals Mexican fruit-fly Pink bollworm Refrigeration and refrigerating machinery Walk-in coolers and freezersBHL Collections: