Biblioteca Digital

4 resultados para siglo 21

em Biodiversity Heritage Library, United States

Finding the North pole; Dr. Cook's own story of his discovery, April 21, 1908, the story of Commander Peary's discovery, April 6, 1909, together with the marvelous record of former Arctic expeditions, ed. by Charles Morris ... with an introduction by George W. Melville ....

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Narrative of a journey to the shores of the Polar Sea, in the years 1819, 20, 21, and 22 /by John Franklin ... ; with an appendix on various subjects relating to science and natural history ; illustrated by numerous plates and maps.

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The California gray whale : papers presented at the California Gray Whale Workshop, Scripps Institution of Oceanography, 21-22 August 1972 / sponsored by [the] Southwest Fisheries Center, La Jolla Laboratory ; Naval Undersea Center ; Carl L. Hubbs, chairman ; W.E. Evans, editor.

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Hydrographical and biological investigations in Norwegian fiords / by O. Nordgaard. The protist plankton and the diatoms in bottom samples / by E. Jørgensen. With 21 plates and 10 figures in the text.

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Resumo:

chapters 3-4