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  1. A dairy laboratory guide /
    By: Ross, Harold Ellis,
    Publication info: New York :Orange Judd Co.,1912, c1910.
    Contributed by: Cornell University Library
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  2. A dairy laboratory guide,
    By: Ross, Harold Ellis,
    Publication info: New York,Orange Judd Company,1914.
    Contributed by: Cornell University Library
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  3. A dairy laboratory guide, by H. E. Ross ...
    By: Ross, Harold Ellis,
    Publication info: New York,Orange Judd company,1910.
    Contributed by: University of California Libraries (archive.org)
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