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Common forest trees of North Carolina. How to know them. A pocket manual - Holmes, J. S. (John Simcox), 1868 -1958 (1922)

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Common trees of New York - Illick, Joseph S. (Joseph Simon), 1884 -1967 (American Tree Association, 1927)

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The complete garden - Cooper, Gordon D. (Garden City Publishing co, 1921)

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