VON HOHNEL, Ludwig Ritter. Zum Rudolf-See und Stefanie-See. Vortrag, gehalten den 22. Jänner 1890. Wien: Commissionsverlag von Ed. Hölzel, 1890.
Small 8vo. Original printed wrappers; pp. 34; 12 illusts., one sketch map; slightly chipped and soiled to spine, else very good.
First edition, published in the series 'Vorträge des Vereines zur Verbreitung naturwissenschaftlicher Kenntnisse in Wien XXX. Jahrgang. - Heft 8'. A lecture in which von Höhnel relates his discovery of the lakes. The full narrative of his discoveries was told in his Discovery of Lakes Rudolf and Stefanie (1894).
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