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Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 2000)

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Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1877)

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Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2018)

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Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1924)

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Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1884)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1885)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1886)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1891)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1901)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1902)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1903)

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Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1954)

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Prodrome d'histoire naturelle du département du Var. 1ère ptie (Imprimerie de P. Garcin, 1853)

Prodromus faunae mediterraneae, sive Descriptio animalium maris Mediterranei incolarum, quam comparata silva rerum quatenus innotuit, adiectis locis et nominibus vulgaribus eorumque auctoribus - Carus, Julius Victor, 1823 -1903 (E. Schweizerbart, 1885)

Prodromus faunae mediterraneae, sive Descriptio animalium maris Mediterranei incolarum, quam comparata silva rerum quatenus innotuit, adiectis locis et nominibus vulgaribus eorumque auctoribus - Carus, Julius Victor, 1823 -1903 (E. Schweizerbart, 1889)