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APA (7th ed.) Citation
Ayres H. B., Ashe W. W., & Thompson Gilbert. (1904). Land classification map of part of the Southern appalachian region. U. S. Geological Survey.
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Chicago Style (17th ed.) Citation
Ayres H. B., Ashe W. W., and Thompson Gilbert. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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MLA (9th ed.) Citation
Ayres H. B., et al. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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