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Observations on new vegetable fossils of the auriferous drifts /

Melbourne : J. Ferres, Govt. Printer, 1874 .
2 pt.in 1., xx (i.e. 21) plates : , At head of title: Geological Survey of Victoria. | Running title: Vegetable fossils of Victoria. | Includes bibliographical references. 27 cm..

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Observations on terrestrial magnetism in Mexico. Conducted under the direction of Baron von Müller, with notes and illustrations of an examination of the volcano Popocatepetl and its vicinity.

By Sonntag, August..
[Washington, Smithsonian Institution, 1860 .
4 p. l., 84 p. 33 cm..

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