RICHTHOFEN, Ferdinand Freiherr von (1833-1905).: - Bemerkungen über die Trennung von Melaphyr und Augitporphyr. (Aus dem XXXIV. Bande, S. 367, des Jahrganges 1859 der Sitzungsberichte [...] der kaiserlichen Akademie der Wissenschaften besonders abgedruckt.)

Wien: Carl Gerold's Sohn, 1859. 8vo, 24.3cm. Pp. 70, notes & refs. Plain new wrappers, uncut.

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