Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1856)

Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1869)

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 Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1911)

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1906)

Novorum actorum Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (Friedrich Frommann, 1867)

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Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1877)

Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1893)

Objects for the microscope : being a popular description of the most instructive and beautiful subjects for exhibition - Clarke, Louisa Lane (Groombridge, 1863)

Objects for the microscope, being a popular description of the most instructive and beautiful subjects for exhibition - Clarke, Louisa Lane (Groombridge and sons, 1871)

Objects for the microscope; a popular description of the most instructive and beautiful subjects for exhibition or examination - Clarke, Louisa Lane (Groombridge, 1889)

Occasional papers - Boston Society of Natural History. (1904)

Occasional Papers of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History - Bernice Pauahi Bishop Museum. (Bishop Museum Press, 1903)

Occasional papers of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1875)

Occasional papers of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1905)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2010)

Occasional papers of the Natural History Society of Wisconsin - Peckham, Elizabeth G. (Elizabeth Gifford), 1854 -1940 (The Society, 1889)

Occasional papers of the Natural History Society of Wisconsin - Peckham, Elizabeth G. (Elizabeth Gifford), 1854 -1940 (The Society, 1890)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1858)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1867)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1872)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1875)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1912)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1917)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1919)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1913)

Okens Lehrbuch der Naturgeschichte - Oken, Lorenz, 1779 -1851 (Bei Carl Heinrich Reclam, 1815)

On animal and vegetable parasites of the human body a manual of their natural history, diagnosis, and treatment - Lankester, Edwin, 1814 -1874 (Printed for the Sydenham Society, 1857)

On animal and vegetable parasites of the human body, a manual of their natural history, diagnosis, and treatment - Küchenmeister, Friedrich, 1821 -1890 (Printed for the Sydenham Society, 1857)

On growth and form - Thompson, D'Arcy Wentworth, 1860 -1948 (University press, 1917)

On growth and form - Thompson, D'Arcy Wentworth, 1860 -1948 (University Press, 1945)

On the history and natural arrangement of insects - Shuckard, William Edward, 1802 -1868 (Printed for Longman, Brown, Green & Longman's Paternoster Row, 1840)

On the history and natural arrangement of insects - Shuckard, William Edward, 1802 -1868 (Printed for Longman, Orme, Brown, Green, & Longmans [etc.], 1840)

On the instincts and habits of the solitary wasps - Peckham, Elizabeth G. (Elizabeth Gifford), 1854 -1940 (Published by the state, 1898)

On the power, wisdom and goodness of God, as manifested in the creation of animals, and in their history, habits and instincts - Kirby, William, 1759 -1850 (Carey, Lea & Blanchard, 1836)

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 (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 & Co, 1889)

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

On two orders of Arachnida : Opiliones, especially the suborder Cyphophthalmi, and Ricinulei, namely the family Cryptostemmatoidae - Royal Society (Great Britain) (University Press, 1904)

One thousand objects for the microscope - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (F. Warne, 1869)

One thousand objects for the microscope - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Frederick Warne, 1869)

Ornithology and oo¨logy of New England: containing full descriptions of the birds of New England, and adjoining states and provinces - Samuels, Edward A. (Edward Augustus), 1836 -1908 (Nichols and Noyes, 1867)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1895)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1896)

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)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (Lippincott, 1874)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (J.B. Lippincott & co, 1869)

Outlines of creation - Noyce, Elisha. (Ward & Lock, 1858)

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

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

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

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

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