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American Monthly Magazine and Critical Review (New York) 4 1818: 309 Cow tree.
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Karl Bruhns (Ed) Life of Alexander Von Humboldt, Vol.I. 1872. Section 2 Chp. II by Julius Lowenberg p.273, in German. Translated to English in 1873 by Jane and Caroline Lassell.
in the Public Domain via Library of Congress Accessed Dec 22,2021 This article incorporates public domain material from websites or documents of the Library of Congress.
Karl Bruhns (Ed) Life of Alexander Von Humboldt, Vol.I. 1872. Appendix p.398, in German. Translated to English in 1873 by Jane and Caroline Lassell.
in the Public Domain via Library of Congress Accessed Dec 23,2021
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Karl Bruhns (Ed) Life of Alexander Von Humboldt, Vol.I. 1872. Section 2 Chp. II by Julius Lowenberg p.273, in German. Translated to English in 1873 by Jane and Caroline Lassell.
in the Public Domain via Library of Congress Accessed Dec 22,2021 This article incorporates public domain material from websites or documents of the Library of Congress.