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1Published 1877“...Naturalists' directory and almanac, International...”
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3Published 2003Subjects: “...Texas Master Naturalist (Program) Periodicals....”
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4Published 1978Subjects: “...Naturalists Directories....”
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6Published 2002“...Monographs of the Western North American naturalist (Online)...”
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7Published 1789Microform Serial
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