North Platte River area designated (noxious) weed treatment program : environmental assessment record - United States. Bureau of Land Management. (Wyoming Department of Agriculture, 1978)

Northcentral Montana coldwater lake ecosystems : 1998 annual report - Montana. Fisheries Division. (Montana Dept. of Fish, Wildlife and Parks, Fisheries Division, 1999)

Northcentral Montana warm and coolwater ecosystems : 1997 annual report - Montana. Fisheries Division. (Montana Department of Fish, Wildlife and Parks, Fisheries Division, 1997)

Northern fishes : with special reference to the Upper Mississippi Valley - Surber, Thaddeus, 1871 -1949 (University of Minnesota Press, 1947)

The Northern microscopist, and microscopical news (1881)

The Northern microscopist, and microscopical news (1882)

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

Notes on aquatic microscopic subjects of natural history : selected from the "Microscopic cabinet" : illustrated by 10 coloured engravings, from original drawings made by C.R. Goring - Pritchard, Andrew, 1804 -1882 (Whittaker, 1854)

Notes on Cladocera. Read December, 1877; printed with additions, November, 1878 - Birge, E. A. (Edward Asahel), 1851 -1950 (D. Atwood, State Printer, 1878)

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 fish-culture in Germany - United States. Bureau of Fisheries. (Govt. print. off, 1895)

Notes on natural history : selected from the Microscopic cabinet - Pritchard, Andrew, 1804 -1882 (Whittaker, 1844)

Notes on the life history of British flowering plants - Lubbock, John, Sir, 1834 -1913 (Macmillan and Co., Ltd, 1905)

Notices of the Proceedings at the meetings of the members of the Royal Institution - Royal Institution of Great Britain. (1854)

Nouveau dictionnaire d'histoire naturelle appliquée aux arts : principalement à l'agriculture et à l'économie rurale et domestique - Imprimerie de Crapelet (Paris, France) (Chez Deterville, 1803)

Nouveau dictionnaire d'histoire naturelle appliquée aux arts : principalement à l'agriculture et à l'économie rurale et domestique - Imprimerie de Crapelet (Paris, France) (Chez Deterville, 1804)

Nouveaux éléments de physiologie humaine, comprenant les principes de la physiologie comparée et de la physiologie générale - Beaunis, Henri Étienne, 1830 -1921 (J. B. Bailliere et fils, 1881)

Nouveaux mémoires de l'Académie royale des sciences et belles-lettres de Bruxelles - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1841)

Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmanni et Filii, 1898)

Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmanni et Filii, 1894)

Nova acta physico-medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (1823)

Nova acta physico-medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (1828)

Nova acta physico-medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (1835)

Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1861)

Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1901)

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, 1915)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1903)

Novorum actorum Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (Friedrich Frommann, 1866)

Novorum actorum Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (Friedrich Frommann, 1854)

Nuova notarisia, rassegna consacrata allo studio delle alghe - Toni, Giovanni Battista de, 1864 -1924 (1893)

Nuova notarisia, rassegna consacrata allo studio delle alghe - Toni, Giovanni Battista de, 1864 -1924 (1895)

Nuova notarisia, rassegna consacrata allo studio delle alghe - Toni, Giovanni Battista de, 1864 -1924 (1899)

Nuova notarisia, rassegna consacrata allo studio delle alghe - Toni, Giovanni Battista de, 1864 -1924 (1902)

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)

Nye bidrag til kundskaben om Middelhavets invertebratfauna IV Ostracoda mediterranea (sydeuropæiske Ostracoder) - Sars, G. O. (Georg Ossian), 1837 -1927 (Alb. Cammermeyer, 1887)

Nye Samling af det Kongelige Danske Videnskabers Selskabs Skrifter - Kongelige Danske videnskabernes selskab. (1783)

Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1863)

Nyt magazin for naturvidenskaberne - Physiographiske forening i Christiania. (Johan Dahl, 1864)

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

Observationes de prima insectorum genesi : adiecta articulatorum evolutionis cum vertebratorum comparatione - Kölliker, Albert, 1817 -1905 (Meyer et Zeller, 1842)

Observations on bees and wasps - Lubbock, John, Sir, 1834 -1913 (1876)

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

The ocean world: being a description of the sea and some of its inhabitants - Figuier, Louis, 1819 -1894 (D. Appleton and Co, 1872)

The ocean world : being a description of the sea and some of its inhabitants - Figuier, Louis, 1819 -1894 (D. Appleton, 1872)

The ocean world: being a description of the sea and some of its inhabitants - Figuier, Louis, 1819 -1894 (Cassell, 1872)

Oceanography; invited lectures presented at the International Oceanographic Congress held in New York, 31 August-12 September 1959 - Sears, Mary (1961)

Oceanus - Woods Hole Oceanographic Institution. (Woods Hole Oceanographic Institution, 1992)