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  1. Climatic cycles and tree-growth.
    By: Douglass, A. E. (Andrew Ellicott),
    Publication info: WashingtonCarnegie Institution of Washington1919-36
    Contributed by: University of Toronto - Gerstein Science Information Centre
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  2. Climatic cycles and tree-growth: a study of the annual rings of trees in relation to climate and solar activity,
    By: Douglass, A. E. (Andrew Ellicott),
    Publication info: Washington,Carnegie Institution of Washington,1919-1936.
    Contributed by: Duke University Libraries (archive.org)
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