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Natural science.

v. 15 (1899)

Proceedings of the Academy of Natural Sciences of Philadelphia.

v.40 (1888)

Proceedings of the Academy of Natural Sciences of Philadelphia.

v.70 (1918)

Proceedings of the Academy of Natural Sciences of Philadelphia.

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Proceedings of the Academy of Natural Sciences of Philadelphia.

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Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world, under the command of Capt. Fitz Roy, R.N.

(1873 printing)

The natural history of British shells : including figures and descriptions of all the species hitherto discovered in Great Britain, systematically arranged in the Linnean manner, with scientific and general observations on each ; in five volumes /

2

The natural history of British shells : including figures and descriptions of all the species hitherto discovered in Great Britain, systematically arranged in the Linnean manner, with scientific and general observations on each ; in five volumes /

4

Natural science.

v. 11 (1897)