Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1847)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1854)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1860)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1901)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1900)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1910)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1908)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1920)

Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1875)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1947)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1950)

Proceedings of the National Academy of Sciences of the United States of America - National Academy of Sciences (U.S.) (National Academy of Sciences [etc.], 1915)

Proceedings of the National Academy of Sciences of the United States of America - National Academy of Sciences (U.S.) (National Academy of Sciences [etc.], 1917)

Proceedings of the National Academy of Sciences of the United States of America - National Academy of Sciences (U.S.) (National Academy of Sciences [etc.], 1920)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1989)

Proceedings of the Oklahoma Academy of Science - Oklahoma Academy of Science (Oklahoma Academy of Science, 1921)

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, 1911)

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, 1922)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1898)

Proceedings of the Society for Experimental Biology and Medicine - Society for Experimental Biology; Medicine (New York, N.Y.) ([Society for Experimental Biology and Medicine], 1904)

Proceedings of the Society for Experimental Biology and Medicine - Society for Experimental Biology; Medicine (New York, N.Y.) ([Society for Experimental Biology and Medicine], 1914)

Proceedings of the Society for Experimental Biology and Medicine - Society for Experimental Biology; Medicine (New York, N.Y.) ([Society for Experimental Biology and Medicine], 1916)

Proceedings of the Society for Experimental Biology and Medicine - Society for Experimental Biology; Medicine (New York, N.Y.) ([Society for Experimental Biology and Medicine], 1922)

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.], 1883)

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.], 1911)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1835)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1855)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1879)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1899)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1901)

Prodrome de paléontologie stratigraphique universelle des animaux mollusques & rayonnés, faisant suite au Cours élémentaire de paléontologie et de géologie stratigraphiques - Orbigny, Alcide Dessalines d', 1802 -1857 (V. Masson, 1849)

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)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1909)

Protoplasm - Seifriz, William, 1888 - (McGraw-Hill Book Company, inc, 1936)

Protoplasmic action and nervous action - Lillie, Ralph S. (Ralph Stayner), 1875 - (University of Chicago Press, 1923)

Protozoa in biological research - Calkins, Gary N. (Gary Nathan), 1869 -1943 (Columbia University Press, 1941)

Publications of the Institute of Marine Science - University of Texas. Institute of Marine Science. (Institute of Marine Science, University of Texas, 1950)

Publications - Puget Sound Biological Station - Puget Sound Biological Station. (Puget Sound Biological Station, University of Washington, 1918)

Publications: studies from the Dept. of Anatomy - Cornell University. Medical College. (1910)

The purification and properties of a hexokinase from the corn scutellum - Jones, Herbert Charles, 1936 - (1965)

Das Quadersandsteingebirge oder Kreidegebirge in Deutschland - Geinitz, Hanns Bruno, 1814 -1900 (Craz & Gerlach, 1849)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1885)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1902)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1905)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1913)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1915)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1921)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1920)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1922)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1956)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1968)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1850)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1885)

Raccolta dei fossili subappennini di Monte Mario presso Roma - Gardini, Galdino (s.n, 1864)