Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1952)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1977)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1979)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1983)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1987)

Proceedings of the Bournemouth Natural Science Society - Bournemouth Natural Science Society (1990)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1917)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1944)

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

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1959)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1964)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1970)

Proceedings of the Chester Society of Natural Science - Chester Society of Natural Science. (1874)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1968)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1901)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1911)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1938)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1951)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1955)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1960)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1962)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1980)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1982)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1991)

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, 1908)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1923)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1881)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1931)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1957)

Proceedings of the VIIth International Orthnithological Congress at Amsterdam 1930 - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (C. de Boer Jr, 1931)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1863)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1872)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1873)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1880)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1881)

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.], 1887)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1888)

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.], 1893)

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.], 1898)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1911)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1913)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1914)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1916)

Protozoa and disease - Clarke, J. Jackson (James Jackson), 1860 -1940 (Baillière, Tindall and Cox, 1903)

Protozoa and disease, comprising sections on the causation of smallpox, syphilis, and cancer. Part II - London School of Hygiene; Tropical Medicine. (Baillère, Tindall and Cox, 1908)

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)

Ptaki - Lemberg. Muzeum imienia Dzieduszyckich. (Z I Zwiazkowij drukarni, 1880)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1908)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1912)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1911)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1914)

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

Raptor management information system : users' guide for an interactive REX2 computer program - United States. Bureau of Land Management. (Bureau of Land Management, 1982)

Raptor management, the state of the art in 1980 - United States. Bureau of Land Management. ([Washington, D.C.?], 1980)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1974)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1975)

Raptor research news - Raptor Research Foundation. (Raptor Research Foundation, 1971)

Die Raubvögel Deutschlands und des angrenzenden Mitteleuropas; Darstellung und Beschreibung der in Deutschland und den benachbarten Ländern von Mitteleuropa vorkommenden Raubvögel - Riesenthal, Oskar von, 1830 -1898 (Verlag von Theodor Fischer, 1876)

Die Raubvögel Deutschlands und des angrenzenden Mitteleuropas : Darstellung und Beschreibung der in Deutschland und den benachbarten Ländern von Mitteleuropa vorkommenden Raubvögel [allen Naturfreunden besonders aber der deutschen Jägerei] - Riesenthal, Oskar von, 1830 -1898 (Theodor Fischer, 1876)

Reading Naturalist. Reading - Reading Natural History Society. (1967)

Reading Naturalist. Reading - Reading Natural History Society. (2020)

Reading Naturalist. Reading - Reading Natural History Society. (2016)

Reading Naturalist. Reading - Reading Natural History Society. (2015)

Recensio avium in academici liberi baronis de Mueller ornithologico museo stuttgardiano collectarum - Calwer, C. G. (Carl Gustav), 1821 -1874 (Officinae Regiae, 1854)

Recherches anatomiques et paléontologiques pour servir à l'histoire des oiseaux fossiles de la France - Milne-Edwards, Alphonse, 1835 -1900 (Victor Masson, 1869)

Recherches anatomiques, histologiques et embryologiques sur l'appareil gastrique des oiseaux - Cazin, Maurice (G. Masson, 1888)

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

The Record of zoological literature (J. van Voorst, 1868)

Records of the Queen Victoria Museum Launceston - Queen Victoria Museum (Launceston, Tas.) (The Museum, 1977)

Report and proceedings of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1910)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1920)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1923)

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. (1926)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1910)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1911)

Report / Warwickshire Natural History & Archaeological Society - Warwickshire Natural History; Archaeological Society. (1861)

Report / Warwickshire Natural History & Archaeological Society - Warwickshire Natural History; Archaeological Society. (1873)

Resoconti delle adunanze - Società entomologica italiana. (Tip. della Gazzetta d'Italia, 1881)

Results of the Swedish zoological expedition to Egypt and the White Nile, 1901, under the direction of L.A. Jägerskiöld - Jägerskiöld, Leonard A., 1867 -1945 (Library of the Royal University of Uppsala, 1904)

Return / British Museum - British Museum (Natural History) (British Museum, 1916)

The Review of applied entomology. Series B, Medical and veterinary - Commonwealth Agricultural Bureaux. (Commonwealth Agricultural Bureaux [etc.], 1915)

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological society of London. 1872 - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1872)

Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Real Academia de Ciencias Exactas, Físicas y Naturales de Madrid, 1904)

Revue critique de l'Ornithologie Européenne de M. De Selys Longchamps - Bonaparte, Charles-Lucien, 1803 -1857 (1850)