Mmoires de J.-B. Boussingault, Volume 3
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Mineralogische Beobachtungen Uber Einige Basalte Am Rhein (1790)
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Aspects of Nature, in Different Lands and Different Climates [Microform]
With Scientific Elucidations »

Personal Narrative Of Travels To The Equinoctial Regions Of America, Vol. Ii (In 3 Volumes)
During The Years 1799-1804 »

Pittoreske Ansichten Der Cordilleren Und
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Personal Narrative Of Travels To The Equinoctial Regions Of The New Continent, During The Years 1799-1804 Volume 4; By Atexander De Humboldt, And Aim
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Personal Narrative of Travels to the Equinoctial Regions of
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Aspects Of Nature, In Different Lands And Different Climates; With Scientific Elucidations
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Proceedings of the American Geographical and Statistical Soc
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Die Entdeckung der Neuen Welt
Kritische Untersuchung zur historischen Entwicklung der geographischen Kenntnisse von der Neuen Welt und den Fortschritten der nautischen Astronomie im 15. u... »