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)

Obras completas y correspondencia científica - Ameghino, Florentino, 1853 -1911 (Taller de Impresiones Oficiales, 1913)

Observations on the California vine disease - Butler, O. (Ormond Rourke), 1877 -1940 (1910)

Observations on the Uraniidae, a family of lepidopterous insects, with a synopsis of the family and a monograph of Coronidia, one of the genera of which it is composed - Westwood, J. O. (John Obadiah), 1805 -1893 (Zoological Society, 1879)

Occasional papers - Texas Tech University. Museum, (The Museum, 2002)

Occasional papers - Texas Tech University. Museum, (The Museum, 2003)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2009)

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

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2012)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2013)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1977)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1983)

The Odonata or dragonflies of South Africa - Ris, F. (Friedrich), 1867 -1931 (Printed for the Trustees of the South African Museum by Adlard, 1921)

The odyssey of an animal collector - Webb, Cecil S. (Longmans, Green, 1954)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1858)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1861)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1864)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1866)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1872)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1881)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1882)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1885)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1889)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1891)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1893)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1894)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1898)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1900)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1901)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1903)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1904)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1907)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1908)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1909)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1911)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1913)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1914)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1921)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1854)

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)

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

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1897)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1873)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1876)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1893)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1937)

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

On animal alkaloids : the ptomaines, leucomaines, and extractives in their pathological relations ... - Aitken, William, 1825 -1892 (H. K. Lewis and Company, 1887)

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 morphology and teleology, especially in the limbs of Mammalia - Wilder, Burt G. (Burt Green), 1841 -1925 (Riverside press, 1865)

On morphology and teleology, especially in the limbs of Mammalia - Wilder, Burt G. (Burt Green), 1841 -1925 (Riverside Press, 1865)

On some insect deformities / by Hermann A. Hagen - Hagen, Hermann August, 1817 -1893 (University Press, 1876)

On the anatomy of vertebrates - Owen, Richard, 1804 -1892 (Longmans, Green, 1866)

On the animal alkaloids : the ptomaïnes, leucomaïnes, and extractives in their pathological relations - Royal College of Physicians of Edinburgh. (H.K. Lewis, 1889)

On the clasping-organs ancillary to generation in certain groups of the lepidoptera - Gosse, Philip Henry, 1810 -1888 (Printed for the Linnean Society by Taylor and Francis, 1883)

On the color and color-patterns of moths and butterflies - Mayer, Alfred Goldsborough, 1868 -1922 (1897)

De ontwikkeling van het chondrocranium van Alytes obstetricans voor de metamorphose - Seters, Wouter Hendrik van. ("Het Klaverblad", 1921)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1904)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1905)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1906)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1908)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1909)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1917)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1922)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1923)

Opera e periodicis collata - Vries, Hugo de, 1848 -1935 (A. Oosthoek, 1918)

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, 1958)

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, 1939)

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)

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, 1942)

Organographie der Pflanzen, insbesondere der Archegoniaten und Samenpflanzen - Goebel, K. (Karl), 1855 -1932 (G. Fischer, 1898)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1896)

Ornithologische Monatsschrift - Deutscher Verein zum Schutze der Vogelwelt. (Kommissions-Verlag der Creutschen Verlagsbuchhandlung, 1890)

The Ornithologist and oölogist (1887)

Ostasiastische Dekapoden - Doflein, Franz, 1873 -1924 (Verlag der k. Akademie in Commission des G. Franz'schen Verlags (J. Roth), 1913)

Ostasiatische decapoden - Balss, Heinrich, 1886 -1957 (1913)

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)

Our search for a wilderness; an account of two ornithological expeditions to Venezuela and to British Guiana - Beebe, William, 1877 -1962 (H. Holt and company, 1910)

Our search for a wilderness; an account of two ornithological expeditions to Venezuela and to British Guiana - Beebe, William, 1877 -1962 (Constable, 1910)

Our search for a wilderness : an account of two ornithological expeditions to Venezuela and to British Guiana - Beebe, William, 1877 -1962 (Holt, 1910)

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, 1858)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

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

Pacific science - University of Hawaii. (University Press of Hawaii, 1960)

Die palaeobotanische Literatur : bibliographische Übersicht über die Arbeiten aus dem Gebiete der Palaeobotanik - Jongmans, W. (Willem), 1878 -1957 (Fischer, 1910)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1895)

Palaeontographica (Theodor Fischer, 1894)

Palaeontographica (Theodor Fischer, 1903)

Palaeontographica (Theodor Fischer, 1907)

Palaeontographica Americana - Paleontological Research Institution (Ithaca, N.Y.) (Paleontological Research Institution, 1984)

Palaeontology - Palaeontological Association (Palaeontological Association, 1963)

Palaeontology - Palaeontological Association (Palaeontological Association, 1965)

Palaeontology - Palaeontological Association (Palaeontological Association, 1973)

Palaeontology - Palaeontological Association (Palaeontological Association, 1974)