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Washington, DC, 1886 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1891 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1888 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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American Geographical Society, 1923
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American Geographical Society, 1914
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Informa UK Limited, 1911
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American Association for the Advancement of Science (AAAS), 1910
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The Science Press, 1910
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American Association for the Advancement of Science (AAAS), 1900
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The Royal Geographical Society, 1903
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American Association for the Advancement of Science (AAAS), 1898
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American Association for the Advancement of Science (AAAS), 1896
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American Association for the Advancement of Science (AAAS), 1895
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American Association for the Advancement of Science (AAAS), 1898
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American Association for the Advancement of Science (AAAS), 1897
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American Association for the Advancement of Science (AAAS), 1897
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American Association for the Advancement of Science (AAAS), 1897
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The MacMillan Company, 1897
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JSTOR, 1896
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The MacMillan Company, 1898