Northern Territory Naturalist - Northern Territory Field Naturalists' Club (, Northern Territory Field Naturalists' Club, 2015)

Notes about some in Finland found species of non-parasitical worms : (Turbellaria, Discophora, et Oligochaeta fennica) / by Axel R. Spoof - Spoof, Axel R[einhold], 1845 - (Printed for the author, 1889)

Notes, chiefly botanical, of a visit to the Island of Coll - Scott, Thomas, 1840 -1929 (Natural History Society of Glasgow, 1880)

Notes from the Royal Zoological Museum of the Netherlands at Leyden - Schlegel, H. (Hermann), 1804 -1884 (E.J. Brill, 1879)

Notes on comparative anatomy a syllabus of a course of lectures delivered at St. Thomas's Hospital - King's College London. (J. and A. Churchill, 1871)

Notes on methods for the narcotization, killing, fixation, and preservation of marine organisms - Marine Biological Laboratory (Woods Hole, Mass.). Systematics-Ecology Program. (Marine Biological Laboratory, Systematics-Ecology Program, 1963)

Notes on orthopteran gregarinidae with especial reference to two unnamed species - Kamm, Minnie Watson, 1886 -1954 (1913)

Notices of the Proceedings at the meetings of the members of the Royal Institution - Royal Institution of Great Britain. (1851)

Notizen aus dem Gebiete der Natur- und Heilkunde (Druck und Verlag des Landes-Industrie-Comptoirs, 1847)

Nouvelles archives du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (Masson et Cie, 1881)

Nova Caledonia. Forschungen in Neu-Caledonien und auf den Loyalty-Inseln. Recherches scientifiques en Nouvelle-Calédonie et aux iles Loyalty. A. Zoologie - Sarasin, Fritz, 1859 -1942 (C.W. Kreidel, 1924)

Nova Caledonia. Forschungen in Neu-Caledonien und auf den Loyalty-Inseln. Recherches scientifiques en Nouvelle-Calédonie et aux iles Loyalty. A. Zoologie - Sarasin, Fritz, 1859 -1942 (C.W. Kreidel, 1913)

Occasional paper - Entomological Society of British Columbia (The Society, 1994)

Occasional papers - Texas Tech University. Museum, (The Museum, 1974)

Occasional papers from the Museum of Victoria. Vol. 1-6 (1984-1993) - Museum of Victoria (Council of the Museum of Victoria, 1992)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1966)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1985)

Oceanus - Woods Hole Oceanographic Institution. (Woods Hole Oceanographic Institution, 1986)

Official lists and indexes of names and works in zoology - International Commission on Zoological Nomenclature (ICZN, 1987)

Official lists and indexes of names and works in zoology Supplement 1986-2000 - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, c/o Natural History Museum, 2001)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1879)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1900)

Ohio Biological Survey notes - Ohio Biological Survey. (Ohio Biological Survey, 2011)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1920)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1905)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1903)

Omphalos: an attempt to untie the geological knot ... - Gosse, Philip Henry, 1810 -1888 (J. Van Voorst, 1857)

On Balantidium coli (Malmsten) and Balantidium suis (sp. nov.) with an account of their neuromotor apparatus - McDonald, James Daley, 1892 - (University of California press, 1922)

On germinal selection as a source of definite variation - Weismann, August, 1834 -1914 (Open Court Pub. Co, 1902)

On germinal selection as a source of definite variation - Weismann, August, 1834 -1914 (The Open court publishing company, 1902)

On intestinal respiration in annelids : with considerations on the origin and evolution of the vascular system in that group - Royal Society of Edinburgh. (Royal Society of Edinburgh?], 1913)

On some species of Gnathostomulida from Bimini, Bahamas - Kirsteuer, Ernst (American Museum of Natural History, 1969)

On the origin & metamorphosis of insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1890)

On the origin and metamorphoses of insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1874)

On the origin and metamorphoses of insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1890)

On the origin and metamorphoses of insects - Lubbock, John, Sir, 1834 -1913 (Macmillan and co, 1874)

On the origin of freshwater faunas: a study in evolution - Sollas, W. J. (William Johnson), 1849 -1936 (Royal Dublin Society, 1884)

On the senses, instincts, and intelligence of animals, with special reference to insects - Lubbock, John, Sir, 1834 -1913 (D. Appleton and Company, 1888)

On the senses, instincts, and intelligence of animals : with special reference to insects - Lubbock, John, Sir, 1834 -1913 (Kegan Paul, Trench & Co, 1889)

On the senses, instincts, and intelligence of animals, with special reference to insects - Lubbock, John, Sir, 1834 -1913 (K. Paul, Trench, 1889)

On the senses, instincts, and intelligence of animals : with special reference to insects - Lubbock, John, Sir, 1834 -1913 (Kegan Paul, Trench, 1888)

On the systematic position of the Brachiopoda; by E.S. Morse (book review) - Verrill, A. E. (Addison Emery), 1839 -1926 (S. Converse, 1874)

On two fresh-water planarians from Chile - Hyman, Libbie Henrietta, 1888 -1969 (American Museum of Natural History, 1959)

Ophiures de l'expédition du Siboga ... - Koehler, R. (René) 1860 -1931 (Librairie et imprimerie ci-devant E. J. Brill, 1904)

Optical activity and living matter - Gauze, G. F. (Georgiĭ Frant︠s︡evich) 1910 -1986 (Biodynamica, 1941)

The Orders and families of worms; according to the Cambridge natural history

Oréades - Instituto de Ciências Biológicas da UFMG. Departamento de Botânica. (Departamento de Botânica, U.F.M.G, 1979)

Die Organisation der Turbellaria Acoela. Mit einem Anhange ueber den Bau und die Bedeutung der Chlorophyllzellen von Convoluta roscoffensis - Graff, Ludwig von, 1851 -1924 (W. Engelmann, 1891)

Die Organisation der Turbellaria Acoela - Graff, Ludwig von, 1851 -1924 (W. Engelmann, 1891)

The origin and development of the nervous system, from a physiological viewpoint - Child, Charles Manning, 1869 -1954 (The University of Chicago press, 1921)

The origin and evolution of life : on the theory of action, reaction and interaction of energy - Osborn, Henry Fairfield, 1857 -1935 (Scribner's, 1918)

The origin and evolution of life, on the theory of action, reaction and interaction of energy - Osborn, Henry Fairfield, 1857 -1935 (C. Scribner's Sons, 1917)

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

Outlines of economic zoölogy - Reese, A. M. (Albert Moore), 1872 -1965 (P. Blakiston's Son & Co, 1919)

Outlines of general biology ; an introductory laboratory manual - Hargitt, Charles W. (Charles Wesley), 1852 -1927 (Lea & Febiger, 1922)

Outlines of physiology, human and comparative - Marshall, John, 1818 -1891 (Lea, 1868)

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

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Appleton, 1916)

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 (H. Frowde and Hodder & Stoughton, 1899)

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

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