Cites del registre
Cita APA (7th ed.)
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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Cita Chicago (17th ed.)
Ayres H. B., Ashe W. W., i Thompson Gilbert. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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Cita MLA (9th ed.)
Ayres H. B., et al. Land Classification Map of Part of the Southern Appalachian Region. U. S. Geological Survey, 1904.
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Atenció: Aquestes cites poden no estar 100% correctes.