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  1. By: Salisbury, Morse, - Knight, Henry Granger, - United States. Bureau of Chemistry and Soils. - National Broadcasting Company.
    Publication info: [United States], [Department of Agriculture], August 31, 1932
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Apples  Bureau of Chemistry and Soils  Control  Insect pests  National farm and home hour (Radio program)  Radio addresses, debates, etc  Radio programs  Research  United States  
  2. By: Knight, Henry Granger, - United States. Bureau of Chemistry and Soils. - National Broadcasting Company.
    Publication info: [United States], [Department of Agriculture], January 6, 1933
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bureau of Chemistry and Soils  National farm and home hour (Radio program)  Radio addresses, debates, etc  Radio programs  Research  Soil microbiology  United States  
  3. By: DeMars, Arthur J., - United States. Weather Bureau - National Broadcasting Company.
    Publication info: [United States], [Department of Agriculture], February 11, 1931
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Insect pests  Radio addresses, debates, etc  Radio programs  United States  Weather forecasting  
  4. By: Thom, Charles, - United States. Bureau of Chemistry and Soils. - National Broadcasting Company.
    Publication info: [United States], [Department of Agriculture], January 19, 1931
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: National farm and home hour (Radio program)  Radio addresses, debates, etc  Radio programs  Soil microbiology  United States