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Washington: Carnegie Institution, 1932
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New York, NY: American Geographical Society, 1952
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New York: American Geographical Society, 1925
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New York: American Geographical Society, 1923
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New York: Columbia Univ. Press, 1948
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Wiesbaden: Edition Erdmann, [2016]
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Chicago: Univ. of Chicago Pr., 1961
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Hamburg: Universal Pictures Germany GmbH, [2017]
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s.l.: Harvard University Press, 1966 ; 1966
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JSTOR, 1927
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American Geographical Society, 1927
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JSTOR, 1929
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American Geographical Society, 1929
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University of Chicago Press, 1926
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Weissenbruch and Co., 1926
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JSTOR, 1967
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Informa UK Limited, 1953
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Informa UK Limited, 1954
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JSTOR, 1952
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JSTOR, 1926