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Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1904)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1854)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1863)

Proceedings of the Royal Society of Edinburgh - Royal Society of Edinburgh. (Royal Society of Edinburgh, 1844)

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

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1878)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1879)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1883)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1903)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1913)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1919)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1918)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1899)

Proceedings of the Smithsonian Marine Science Symposium - Rützler, Klaus (Smithsonian Institution Scholarly Press, 2009)

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, 1908)

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.], 1913)

Prodromus descriptionis animalium ab H. Mertensio observatorum : fascic. I. Polypos, Acalephas Discophoras et Siphonophoras, nec non Echinodermata continens - Brandt, Johann-Friedrich, 1802 -1879 (Acad. imp. sci, 1834)

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)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1911)

The Protozoa - Calkins, Gary N. (Gary Nathan), 1869 -1943 (The Macmillan company, 1901)

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Protozoa - Schwager, Conrad. (C.F. Winter, 1880)

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)

Protozoology : a manual for medical men, veterinarians and zoologists - Wenyon, C. M. (Charles Morley), 1878 -1948 (W. Wood, 1926)

Quadro elementar da historia natural dos animaes - Cuvier, Georges, baron, 1769 -1832 (impresso por H. Bryer, 1815)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1854)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1856)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1861)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1862)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1863)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1865)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1870)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1872)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1873)

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

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1879)

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

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1881)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1882)