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)

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1917)

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

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1914)

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1909)

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1915)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1939)

Nutrient cycling in the Great Lakes : a summarization of factors regulating the cycling of phosphorus - University of Michigan. Great Lakes Research Division. (University of Michigan, Great Lakes Environmental Research Laboratory, Cooperative Program in Great Lakes Longterm Effects Research, 1980)

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

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Die Oligochäten der deutschen Tiefsee-Expedition : nebst Erörterung der Terricolenfauna oceanischer Inseln, insbesondere der Inseln des subantarktischen Meeres - Michaelsen, W. (Wilhelm), 1860 -1937 (G. Fischer, 1902)

Gli oligocheti della regione neotropicale : memoria - Cognetti de Martiis, Luigi, 1930 (C. Clausen, 1905)

Gli oligocheti della regione neotropicale : memoria - Cognetti de Martiis, Luigi, 1930 (C. Clausen, 1906)

On a hologynous species of the earthworm genus Diplocardia : with comments on oligochaete hologyny and "consecutive hermaphroditism" - Gates, G. E. (Gordon Enoch), 1897 -1987 (American Museum of Natural History, 1958)

On California Eudrilidæ - Eisen, Gustav, 1847 -1940 (1894)

On some earthworms from Burma - Raven, Henry Cushier, 1889 -1944 (American Museum of Natural History, 1952)

On some species of the Oriental earthworm genus Pheretima Kinberg, 1867 : with key to species reported from the Americas - Gates, G. E. (Gordon Enoch), 1897 -1987 (American Museum of Natural History, 1958)

Opalina : its anatomy and reproduction, with a decription of infection experiments and a chronological review of the literature - Metcalf, Maynard M. (Maynard Mayo), 1868 -1940 (G. Fischer, 1909)

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, 1956)

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

The organic matter budget and energy flow of a tropical lowland aquatic ecosystem - Brinson, Mark M. (1973)

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)

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

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Paläobiologie der Cephalopoden aus der Gruppe der Dibranchiaten - Abel, Othenio, 1875 -1946 (G. Fischer, 1916)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1891)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

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

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The Phoenix - Jennings, Michael C. (M.C. Jennings, 2011)