Oesterreichische botanische Zeitschrift (A. Skofitz, 1902)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1904)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1905)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1907)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1848)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1850)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1851)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1866)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1871)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1891)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1894)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1899)

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

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1918)

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

The oldest and largest water garden specialists : 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.W. Ramsey Advertising Agency, 1953)

The oldest and largest water garden specialists : 1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Tricker, Inc, 1954)

The oldest and largest water garden specialists : 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Tricker, Inc, 1955)

The oldest and largest water garden specialists : 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Tricker, Inc, 1957)

The oldest and largest water garden specialists : 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William Tricker, Inc, 1958)

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

On a new genus of the Crustacea, and the species on which it is established. Read July 8, 1817 - Say, Thomas, 1787 -1834 (Academy of Natural Sciences of Philadelphia, 1817)

On a true parthenogenesis in moths and bees, a contribution to the history of reproduction in animals - Siebold, C. Th. E. von (Carl Theodor Ernst), 1804 -1885 (J. Van Voorst, 1857)

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 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, 1945)

On molecular and microscopic science - Somerville, Mary Fairfax, 1780 -1872 (J. Murray, 1869)

On molecular and microscopic science - Somerville, Mary, 1780 -1872 (J. Murray, 1869)

On some Entomostraca collected in the Arctic Seas in 1898 by William S. Bruce, F.R.S.G.S - Scott, Thomas, 1840 -1929 (Taylor & Francis, 1901)

On the classification and geographical distribution of crustacea; from the report on crustacea of the United States exploring expedition, under Captain Charles Wilkes, U.S.N., during the years 1838-1842 - Dana, James Dwight, 1813 -1895 (Sherman, 1853)

On the classification and geographical distribution of Crustacea - Dana, James Dwight, 1813 -1895 (C. Sherman, 1853)

On the experimental hybridization of echinoids - Shearer, Cresswell, 1874 - (University Press], 1914)

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 importance of larval characters in the classification of mosquitoes - Christophers, S. R. (Samuel Rickard), 1873 -1978 (Office of the superintendent of government printing, India, 1906)

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 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 (K. Paul, Trench, 1889)

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 (Kegan Paul, Trench, 1888)

On the structure of the brain of the sessile-eyed Crustacea - Packard, A. S. (Alpheus Spring), 1839 -1905 (National Academy of Sciences, 1884)

On the variability of bacteria and the development of races - Adami, J. George (John George), 1862 -1926 (J. Heywood, 1892)

On a true parthenogenesis in moths and bees; a contribution to the history of reproduction in animals - Siebold, C. Th. E. von (Carl Theodor Ernst), 1804 -1885 (J. Van Voorst, 1857)

On a true parthenogenesis in moths and bees, a contribution to the history of reproduction in animals - Siebold, C. Th. E. von (Carl Theodor Ernst), 1804 -1885 (John Van Voorst, Paternoster Row, 1857)

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)

Ontogeny of the ethmoidal region and hyopalatine arch in Macrognathus pancalus (Percomorpha, Mastacembeloidei) : with critical remarks on mastacembeloid inter- and intrarelationships - Britz, Ralf, 1964 - (American Museum of Natural History, 1996)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1911)

The open book of nature : an introduction to nature study - Hall, Charles A. (Charles Albert), 1872 -1965 (Adam and Charles Black, 1911)

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, 1954)

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

Opuscoli scientifici d'entomologia, di fisica e d'agricoltura - Termeyer, Ramón María, 1737 -1814 (Nella Stamperia del Giornale italico di Carlo Dova, contrada S. Rafaello, num. 998, 1807)

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

The organism as a whole, from a physico-chemical viewpoint - Loeb, Jacques, 1859 -1924 (Putnam, 1916)

The organism as a whole : from a physicochemical viewpoint - Loeb, Jacques, 1859 -1924 (G. P. Putnam's sons, 1916)

The organism as a whole, from a physicochemical viewpoint - Loeb, Jacques, 1859 -1924 (Putnam's Sons, 1916)