Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1913)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1841)

Proceedings of the Belfast Natural History and Philosophical Society - Belfast Natural History; Philosophical Society. (1852)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1961)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1862)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1866)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1954)

Proceedings of the Geological and Polytechnic Society of the West Riding of Yorkshire - Geological; Polytechnic Society of the West Riding of Yorkshire. ([Geological and Polytechnic Society of the West Riding of Yorkshire], 1871)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1889)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1888)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1901)

Proceedings of the Literary and Philosophical Society of Liverpool - Literary; Philosophical Society of Liverpool. (1854)

Proceedings of the Literary and Philosophical Society of Manchester - Literary; Philosophical Society of Manchester. (The Society, 1873)

Proceedings of the Literary and Philosophical Society of Manchester - Literary; Philosophical Society of Manchester. (The Society, 1876)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1913)

Proceedings of the Natural History Society of Glasgow - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1858)

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

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1843)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1898)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1880)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1883)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1885)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1894)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1909)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1884)

Proceedings of the Royal Society of London Series B Containing papers of a Biological character - Royal Society (Great Britain) (Printed for the Royal Society and sold by Harrison & Sons, 1915)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1906)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1921)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1833)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1836)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1847)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1895)

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

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)

Promenades d'un naturaliste sur le littoral de Cette à Aigues-Mortes, Conchyliologie - Dubrueil, E. (C. Coulet; [etc., etc.], 1877)

Propriétés optiques des muscles - Vlès, Fred, 1885 - (A. Hermann, 1911)

Protozoa - Schwager, Conrad. (C.F. Winter, 1887)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (C. C. Thomas, 1954)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (C.C. Thomas, 1946)

Protozoology - Kudo, Richard R. (Richard Roksabro), 1886 -1967 (Thomas, 1939)

Quarterly journal of conchology (D. Bogue, 1875)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1874)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1877)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1853)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1845)

Radiation biology - Hollaender, Alexander, 1898 - (McGraw-Hill, 1954)

Recherches pour servir à l'histoire du système nerveux des céphalopodes dibranchiaux - Chéron, Jules, 1839 -1900 (Imprimerie de E. Martinet, 1866)

Recherches sur la fécondation et le commencement de l'hénogénie chez divers animaux - Fol, Hermann, 1845 -1892 (H. Georg, 1879)

Recherches sur la Poche du Noir des Céphalopodes des côtes de France - Girod, Paul Émile, 1856 - (Typ. A. Hennuyer, 1881)

Recherches sur les phénomènes de la digestion chez les mollusques céphalopodes - Bourquelot, Émile, 1851 -1921 (Typ. A. Hennuyer, 1884)

The Record of zoological literature (J. van Voorst, 1865)

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

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1921)

Recueil zoologique suisse (H. Geog, 1885)

Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée - Audouin, Jean Victor, 1797 -1841 (Fortin, Masson et cie, 1845)

Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée - Audouin, Jean Victor, 1797 -1841 (Fortin, Masson et cie, 1836)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1892)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1922)

Report (and Abstracts of Proceedings and Papers) of the Brighton and Sussex Natural History and Philosophical Society - Brighton; Sussex Natural History; Philosophical Society. (1870)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1882)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1900)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1843)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1850)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1852)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1856)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1861)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1831)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1867)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1869)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1886)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1908)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1924)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1929)

Report of the Canadian Arctic Expedition 1913-18 (F. A. Acland, Printer to the King, 1913)

Report of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1886)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1882)

Report of the Commissioner for ... - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1885)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1897)

Report on the cephalopods of the northeastern coast of America - Verrill, A. E. (Addison Emery), 1839 -1926 (Govt. print. off, 1882)

Report on the cephalopods of the northeastern coast of America - Verrill, A. E. (Addison Emery), 1839 -1926 (G.P.O, 1882)

Report on the scientific results of the "Michael Sars" north Atlantic deep-sea expedition 1910, carried out under the auspices of the Norwegian government and the superintendence of Sir John Murray, K.C.B., and Dr. Johan Hjort - Murray, John, Sir, 1841 -1914 (The Trustees of the Bergen museum, 1913)

Report on the scientific results of the "Michael Sars" north Atlantic deep-sea expedition 1910, carried out under the auspices of the Norwegian government and the superintendence of Sir John Murray, K.C.B., and Dr. Johan Hjort - Murray, John, Sir, 1841 -1914 (The Trustees of the Bergen museum, 1933)

Report on the scientific results of the voyage of H. M. S. Challenger: during the years 1873-76: under the command of Captain George S. Nares, R.N. F.R.S. and the late Captain Frank Tourle Thomson, R.N. Zoology - Thomson, C. Wyville, Sir, (Charles Wyville), 1830 -1882 (Hmso, 1886)