By Humboldt, Alexander von.
Barcelona Editorial Labor 1962 .
xi, 429 p., xxx p. of plates , Translation of the German title: Von Orinoko zum Amazonas, which is a translation of the French title: Voyage aux régions équinoxiales du Nouveau continent. | Maps on lining-papers. | "Seguido de dos ensayos epilogares, ʻAlejandro de Humboldt, en su centenarioʼ por Adolf Meyer-Abich, y ʻAlejandro de Humboldt y los españolesʼ por Rafael Candel Vila"--verso t.p. 22 cm..

By Humboldt, Alexander von.
México, D.F. Siglo Veintiuno | Universidad Nacional Autónoma de México 1997 .
134 p., xlii leaves of plates , Translation of the 1805-1807 ed. published by Levrault Schoell, Paris. | Aimé Bonpland given as co-author on title page of French original. 36 cm..
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