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  1. The alcohol test in relation to milk /
    By: Ayers, S. Henry - Johnson, W. T.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
    Contributed by: Multiple institutions
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  2. A bacteriological study of retail ice cream /
    By: Ayers, S. Henry - Johnson, W. T.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  3. Cooling hot-bottled pasteurized milk by forced air /
    By: Ayers, S. Henry - Bowen, John T. - Johnson, W. T.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1916.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  4. The determination of bacteria in ice cream /
    By: Ayers, S. Henry - Johnson, W. T.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1917.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  5. The four essential factors in the production of milk of low bacterial content /
    By: Ayers, S. Henry - Clemmer, Paul W. - Cook, Lee Briggs,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1918.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  6. Pasteurizing milk in bottles and bottling hot milk pasteurized in bulk /
    By: Ayers, S. Henry - Johnson, W. T.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  7. The present status of the pasteurization of milk /
    By: Ayers, S. Henry
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1926.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  8. The present status of the pasteurization of milk /
    By: Ayers, S. Henry
    Edition: Rev.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1932.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  9. The present status of the pasteurization of milk /
    By: Ayers, S. Henry
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1916.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  10. The present status of the pasteurization of milk. By S. Henry Ayers ...
    By: Ayers, S. Henry
    Publication info: Washington[Govt print. off.]1922.
    Contributed by: Multiple institutions
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  11. The sporogenes test as an index of the contamination of milk /
    By: Ayers, S. Henry - Clemmer, Paul W.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1921.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  12. A study of the alkali-forming bacteria found in milk /
    By: Ayers, S. Henry - Johnson, W. T. - Rupp, Philip,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1919.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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