De distributione geographica plantarum secundum cœli temperiem et altitudinem montium, prolegomena (1817)
Humboldt, Alexander von, 1769-1859, Thomas Jefferson Library Collection Supplement (Library of Congress) · Lutetiæ Parisiorum, in Libraria græco-latino-germanica, 1817. · leaf 86
Phytogeography
Library of Congress, Rare Book and Special Collections Division · No known copyright restrictions. Free to use for anything.
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