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  1. Dry-farming : a system of agriculture for countries under a low rainfall /
    By: Widtsoe, John Andreas,
    Publication info: New York :The Macmillan Company,1911.
    Holding Institution: Cornell University Library
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  2. Dry-farming;
    By: Widtsoe, John Andreas,
    Publication info: New York,The Macmillan company,1911.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
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  3. Dry-farming; a system of agriculture for countries under a low rainfall,
    By: Widtsoe, John Andreas,
    Publication info: New York,The Macmillan company,1911.
    Holding Institution: Wellesley College Library (archive.org)
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  4. Dry-farming; a system of agriculture for countries under a low rainfall,
    By: Widtsoe, John Andreas,
    Publication info: New York,The Macmillan company,1912, c1911.
    Holding Institution: Cornell University Library
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  5. The principles of irrigation practice,
    By: Widtsoe, John Andreas,
    Publication info: New York,The Macmillan Company; [etc., etc.]1914.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
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  6. The principles of irrigation practice,
    By: Widtsoe, John Andreas,
    Publication info: New York,The Macmillan Company; [etc., etc.]1914.
    Holding Institution: University of California Libraries (archive.org)
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  7. Western agriculture,
    By: Widtsoe, John Andreas, - Stewart, George,
    Publication info: St. Paul, Minn.,Webb Publishing Company,1918.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
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