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Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1856)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1878)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1884)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1892)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1894)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1907)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1913)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1903)

Proceedings of the Asiatic Society of Bengal - Asiatic Society of Bengal ([The Society], 1874)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1872)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1906)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1903)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1911)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 2001)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1891)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1851)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1867)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1832)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1867)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1874)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1875)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1895)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1901)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1902)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1914)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1917)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1919)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1862)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1874)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1902)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1830)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1861)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1871)

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)

Quaestiones entomologicae - University of Alberta. Dept. of Entomology. (Dept. of Entomology, University of Alberta, 1971)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1868)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1875)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1878)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1880)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1886)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1889)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1890)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1891)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1892)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1893)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1895)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1894)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1896)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1897)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1899)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1900)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1901)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1904)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1906)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1910)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1917)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1919)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1888)

Raboty Volzhskoĭ biologicheskoĭ stant͡sii = Arbeiten der Biologischen Wolga-Station - Volzhskai͡a biologicheskai͡a stant͡sii͡a (Stant͡sii͡a, 1913)

The reason why. Natural history - Philp, Robert Kemp, 1819 -1882 (Houlston and Wright, 1860)

The reason why, natural history giving reasons for hundreds of interesting facts in connection with zoology : and throwing light upon the peculiar habits and instincts of the various orders of the animal kingdom - Making of America Project. (Dick & Fitzgerald, 1870)

Recherches sur le développement de l'Amphioxus - Cerfontaine, Paul. (1906)

Recherches sur le système nerveux des poissons / par Émile Baudelot ; ouvrage précédé d'un avertissement par M. Émile Blanchard - Blanchard, Emile, 1819 -1900 (G. Masson, 1883)

Recherches sur les poissons fossiles ... - Agassiz, Louis, 1807 -1873 (Petitpierre, 1833)

The Record of zoological literature (J. van Voorst, 1866)

The Record of zoological literature (J. van Voorst, 1867)

Recueil zoologique suisse (H. Geog, 1884)

Die Regeneration von Geweben und Organen bei den Wirbelthieren, besonders Amphibien und Reptilien - Fraisse, Paul, 1851 -1909 (T. Fischer, 1885)

Rendiconti - Reale Accademia dei Lincei (l'Accademia, 1889)

Rendiconti - Reale Accademia dei Lincei (l'Accademia, 1890)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1904)

Report (and Abstracts of Proceedings and Papers) of the Brighton and Sussex Natural History and Philosophical Society - Brighton; Sussex Natural History; Philosophical Society. (1875)