Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1955)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1956)

Organic evolution considered - Fairhurst, Alfred, 1843 -1921 (Christian publishing, 1897)

Die Organisation der Trilobiten aus ihren lebenden Verwandten entwickelt - Burmeister, Hermann, 1807 -1892 (Georg Reimer, 1843)

The organization of Trilobites, deduced from their living affinities. With a systematic review of the species hitherto described - Bell, Thomas, 1792 -1880 (Printed for the Ray Society, 1846)

The organization of trilobites, deduced from their living affinities : with a systematic review of the species hitherto described - Bell, Thomas, 1792 -1880 (Printed for the Ray society, 1846)

Oscar Harger, 1843-1887 - Smith, Sidney I. (Sidney Irving) 1843 -1926 (s.n)

Die österreichische Polarstation Jan Mayen, ausgerüstet durch Graf Hanns Wilczek, geleitet vom Emil Edlen von Wohlgemuth. Beobachtungs-Ergebnisse, hrsg. von der Kaiserlichen Akademie der Wissenschaften - International Polar Expedition 1882 -1883 (In Commission bei K. Gerold's Sohn, 1886)

Die ostracoden der Siboga-expedition - Müller, Gustav Wilhelm, 1857 - (Buchhandlung und druckerei vormals E. J. Brill, 1906)

Our common British fossils, and where to find them; a handbook for students - Taylor, J. E. (John Ellor), 1837 -1895 (Chatto, 1885)

Our common British fossils and where to find them : a handbook for students - Taylor, J. E. (John Ellor), 1837 -1895 (Chatto and Windus, 1885)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

An outline of the natural history of our shores - Sinel, Joseph. (S. Sonnenschein, 1906)

An outline of the natural history of our shores - Sinel, Joseph. (Swan Sonnenschein & Co, 1906)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

Outlines of physiology: with an appendix on phrenology - Roget, Peter Mark, 1779 -1869 (Lea and Blanchard, 1839)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Pentland, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1906)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Humphrey Milford, Oxford University Press, 1929)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1888)

Oversigt over det vestilge Grønlands fauna af malakostrake Havkrebsdyr - Hansen, H. J. (Hans Jacob), 1855 -1936 ([Bianco Luno], 1887)

The Oxycephalids - Bovallius, Carl, 1844 -1907 (Printed by E. Berling, 1890)

Pacific science - University of Hawaii. (University Press of Hawaii, 1947)

Pacific science - University of Hawaii. (University Press of Hawaii, 1951)

Pacific science - University of Hawaii. (University Press of Hawaii, 1952)

Pacific science - University of Hawaii. (University Press of Hawaii, 1953)

Pacific science - University of Hawaii. (University Press of Hawaii, 1954)

Pacific science - University of Hawaii. (University Press of Hawaii, 1955)

Pacific science - University of Hawaii. (University Press of Hawaii, 1958)

Pacific science - University of Hawaii. (University Press of Hawaii, 1959)

Pacific science - University of Hawaii. (University Press of Hawaii, 1962)

Pacific science - University of Hawaii. (University Press of Hawaii, 1964)

Pacific science - University of Hawaii. (University Press of Hawaii, 1965)

Pagurid crabs of the western North Atlantic south of Cape Hatteras - Wass, Marvin L. (Marvin Leroy),‏ ‎ 1922 - (1959)

Palaeontographica (Theodor Fischer, 1910)

Palaeontographica Americana - Paleontological Research Institution (Ithaca, N.Y.) (Paleontological Research Institution, 1986)

Palaeontology - Palaeontological Association (Palaeontological Association, 1974)

Palaeontology - Palaeontological Association (Palaeontological Association, 1975)

Palaeontology - Palaeontological Association (Palaeontological Association, 1988)

Palaeontology - Palaeontological Association (Palaeontological Association, 1993)

Palaeontology - Palaeontological Association (Palaeontological Association, 1995)

Palæontology, invertebrate - Woods, Henry, 1868 -1952 (The University press, 1909)

Palaeontology; or, A systematic summary of extinct animals and their geological relations - Owen, Richard, 1804 -1892 (A. and C. Black, 1861)

Palaeozoic Crustacea. The publications and notes on the genera and species during the past twenty years, 1895-1917 - Vogdes, Anthony Wayne, 1843 -1923 (Press of Frye & Smith, 1917)

Palaozoologie : Entwurf einer systematischen Darstellung der Fauna der Vorwelt - Giebel, C. (Christoph), 1820 -1881 (Nulandt'sche buchandlung (L. Garcke), 1846)

Paleontological research - Nihon Koseibutsu Gakkai (Palaeontological Society of Japan, 2002)

Palmer Peninsula (Antarctica) Survey, 1962-1963 : station data - Schmitt, Waldo L. (Waldo Lasalle), 1887 -1977 (1962)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1951)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1974)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1978)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1979)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1982)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1983)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1985)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1998)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1999)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1892)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1893)

Papers from the Tortugas Laboratory of the Carnegie Institution of Washington - Carnegie Institution of Washington. Department of Marine Biology. (Carnegie Institution of Washington, 1915)

Papers in marine biology and oceanography (Pergamon Press, 1955)

Papers on Diptera - Melander, A. L. (Axel Leonard), 1878 -1962 (Smithsonian Institution, 1902)

Parasites : a treatise on the entozoa of man and animals, including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

Parasites a treatise on the entozoa of man and animals including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

The parasites of man, and the diseases which proceed from them; a textbook for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Pentland, 1886)

The parasites of man, and the diseases which proceed from them : a text-book for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Young J. Pentland, 1886)

The parasites of man, and the diseases which proceed from them. A text-book for students and practitioners - Leuckart, Rudolf, 1823 -1898 (Y.J. Pentland, 1886)

Parasites : a treatise on the entozoa of man and animals including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

Parasitische prosobranchier der Siboga-expedition - Nierstrasz, H.F. (Hugo Frederik), 1872 -1937 (E. J. Brill, 1909)

The Peary auxiliary expedition of 1894 - Chamberlin, Thomas C. Thomas Chrowder), 1843 -1928 ([The Geological Club of Philadelphia], 1895)

The pelagic Tunicata / by William E. Ritter and Edith S. Byxbee - Ritter, William Emerson, 1856 -1944 (Printed for the Museum, 1905)

Les pénéides et sténopides / par Alphonse Milne-Edwards et E. L. Bouvier ; with nine plates - Milne-Edwards, Alphonse, 1835 -1900 (Printed for the Museum, 1909)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)