Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1895)

Proceedings of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1896)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1926)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1928)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1931)

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 Malacological Society of London - Malacological Society of London (Dulau, 1894)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1895)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1896)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1899)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1902)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1905)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1907)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1908)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1911)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1912)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1915)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1920)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1921)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1922)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1911)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1906)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1910)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1893)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1884)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1892)

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.], 1881)

Proceedings of the Zoological Society of London : an index to the artists, 1848-1900 - Johnson, Bryan R., 1956 - (Garland, 1986)

Prodrome de la malacologie terrestre et fluviatile de la Tunisie - Bourguignat, J. R. (Jules René), 1829 -1892 (Imprimerie Nationale, 1887)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1896)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1904)

Random notes on natural history (Southwick & Jencks, 1886)

Die Raublungenschnecken (Agnatha). erste Abtheilung, Rhytidae & Enneidae - Kobelt, Wilhelm, 1840 -1916 (Verlag von Bauer & Raspe (Emil Küster), 1905)

Record of Proceedings / Cleveland Naturalists' Field Club - Cleveland Naturalists' Field Club. (1899)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1907)

Report - New York (State). Board of General Managers of the Exhibit of the State of New York at the World's Columbian Exposition. (J. B. Lyon, 1894)

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

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1895)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1900)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1903)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1909)

Report on economic biology - Collinge, Walter E. (Walter Edward), 1867 -1947 (The Midland Educational Co, 1911)

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 ... and the late Captain Frank Tourle Thomson, R.N - Thomson, C. Wyville, Sir, (Charles Wyville), 1830 -1882 (Neill, 1885)

Reports and transactions - Cardiff Naturalists' Society. (1893)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1905)

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

Revised reference list of South African non-marine Mollusca; with descriptions of new species in the South African Museum - Connolly, Matthew William Kemble, 1872 -1947 (Printed for the Trustees of the South African Museum, 1912)

Revue biologique du nord de la France (Le Bigot, 1893)

Revue critique de paléozoologie et de paléophytologie (M. Cossman, 1897)

Revue critique de paléozoologie - Cossmann, M. (Maurice), 1850 -1924 (M. Cossmann, 1903)

Revue critique de paléozoologie - Cossmann, M. (Maurice), 1850 -1924 (M. Cossmann, 1906)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1938)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1948)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1953)

Revue de mycologie - Laboratoire de cryptogamie, Paris (Laboratoire de cryptogamie, 1974)

Revue des sciences naturelles (1881)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1883)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1885)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1888)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1892)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1896)

Revue et magasin de zoologie pure et appliquée - Société Cuvierienne. (Bureau de la Revue et Magasin de Zoologie, 1870)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1900)

La Revue scientifique du Limousin - Le Gendre, Charles. (Impr.-Librairie Ve. H. Ducourtieux, 1909)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1897)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1900)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1902)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1903)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1912)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1914)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1921)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1938)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1899)

Rozpravy české akademie císaře Františka Josefa pro vědy, slovesnost a umění. Třída II, Mathematicko-přírodnicka - Česka akademie Císaře Františka Josefa pro vědy slovenost a umění. Třida II: Mathematicko-přírodnická. (1912)

Russkoe entomologicheskoe obozrenie = Revue russe d'entomologie - Russkoe entomologicheskoe obshchestvo (Russkoe entomologicheskoe obshchestvo, 1911)

Sale catalogues by Sowerby and Fulton - Sowerby, G. B. (George Brettingham), 1812 -1884 (Dryden Press, 1902)

Die Sammlungen des kaukasischen Museums. Bd. 1, Zoologie, von Dr. Gustav Radde - Radde, Gustav, 1831 -1903 (Typographie der Kanzelei des Landeschefs, 1899)

Die sarmatische Gastropodenfauna von Rákosd im Komitat Hunyad - Gaál, Stefan v. (Franklin, 1911)

Die Schnirkelschnecken (Gattung Helix) in Abbildungen nach der Natur - Chemnitz, Johann Hieronymus, 1730 -1800 (Verlag von Bauer und Raspe (Julius Merz), 1846)

Schriften des Naturwissenschaftlichen Vereins für Schleswig-Holstein - Naturwissenschaftlicher Verein für Schleswig-Holstein. (Lipsius & Tischer, 1911)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1896)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1897)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1898)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1901)

Science progress in the twentieth century : a quarterly journal of scientific work & thought (John Murray, 1909)

The Scientific proceedings of the Royal Dublin Society - Royal Dublin Society. (The Society, 1922)

The Scottish naturalist (T. Buncle & Co. [etc.], 1912)

The Scottish naturalist (T. Buncle & Co. [etc.], 1913)