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  1. Economic botany of Alabama.
    By: Harper, Roland McMillan,
    Publication info: University, Ala.,1913-1928.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
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  2. A forest census of Alabama by geographical divisions
    By: Harper, Roland M. (Roland McMillan),
    Publication info: [n. p.]1916.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
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  3. Resources of southern Alabama : a statistical guide for investors and settlers, with an exposition of some of the principles of economic geography / by Roland M. Harper.
    By: Harper, Roland M. (Roland McMillan), - Geological Survey of Alabama.
    Publication info: University, Ala. :Geological Survey of Alabama,[1920].
    Holding Institution: University of California Libraries (archive.org)
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  4. Roland Harper field book, Okefinokee Swamp, 1902
    By: Harper, Roland McMillan, 1878-1966
    Publication info: 1902
    Holding Institution: Smithsonian Institution Archives
    BHL Collections: Smithsonian Field Books collection
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