The North American slime-moulds; a descriptive list of all species of myxomycetes hitherto reported from the continent of North America, with notes on some extralimital species - Macbride, Thomas H. (Thomas Huston), 1848 -1934 (Macmillan Co, 1922)

North Atlantic biota and their history; a symposium held at the University of Iceland, Reykjavík, July 1962, under the auspices of the University of Iceland and the Museum of Natural History. Editors: Askell Löve and Doris Löve. Sponsored by the NATO Advanced Study Institutes Program - Áskell Löve, 1916 -1994 (Pergamon Press, 1963)

The Northern microscopist, and microscopical news (1881)

Notes from the Royal Botanic Garden, Edinburgh - Royal Botanic Garden, Edinburgh. (H. M. Stationery Off, 1905)

Notiser ur Sällskapets pro Fauna et Flora Fennica förhandlingar - Societas pro Fauna et Flora Fennica (Sällskapet pro Fauna et Flora Fennica, 1868)

Notizen aus dem Gebiete der Natur- und Heilkunde (G.H.S. pr. Landes-Industrie-Comptoir, 1826)

Notizen aus dem Gebiete der Natur- und Heilkunde (G.H.S. pr. Landes-Industrie-Comptoir, 1829)

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)

Nouveau dictionnaire d'histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc (Chez Deterville, 1819)

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. (1844)

Nouvelle flore des environs de Paris, suivant la méthode naturelle, avec l'indication des vertus des plantes usitées en médecine - Mérat, F. V. (François Victor), 1780 -1851 (Méquignon-Marvis, 1821)

Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmanni et Filii, 1874)

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Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1871)

Nova genera plantarum - Schrader, H. A. (Heinrich Adolph),‏ 1767 -1836 (Apvd S. L. Crvsivm, 1797)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2003)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2004)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2005)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2006)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2008)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2009)

Novorum actorum Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (Friedrich Frommann, 1847)

Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 2010)

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Observationes Mycologicæ, &c - Persoon, C. H. (Christiaan Hendrik), 1755 -1837 (1799)

Observations et Mémoires sur la Physique, sur l'Histoire Naturelle et sur les Arts et Métiers, etc (1793)

Oekonomisch-technische Flora der Wetterau - Gärtner, Gottfried, 1754 -1825 (P. H. Guilhauman, 1799)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1858)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1863)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1877)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1885)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1892)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1895)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1897)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1905)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1908)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1911)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1916)

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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, 1881)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1897)

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

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 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 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)

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)

Onomatologia botanica completa : oder Vollständiges botanisches Wörterbuch ; worinn nicht nur alle Kunstwörter übersetzt und erklärt, die bekannte [sic] Pflanzen nach der Lehrart des Ritters von Linne beschrieben, ihre verschiedene Namen nach den berühmtesten Schriftstellern angeführt, und eine kleine Lebensgeschichte der vornehmsten Kräuterkundigen beygefügt, sondern auch die Heilskräfte und der Nutzen, den die Arzney-Wissenschaft, Landwirtschaft, Färberey, Vieharzney- und Scheidekunst aus denselben ziehen, aus den besten Schriften dieser Art und aus eigener Erfahrung erläutert werden von einer Gesellschaft erfahrner Pflanzenkundiger - Gmelin, Johann Friedrich, 1748 -1804 ([publisher not identified], 1773)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1912)

Organographie vegetale ; ou, Description raisonnee des organes des plantes, pour servir de suite et de developpement a la theorie elementaire de la botanique, et d'introduction a la physiologie vegetale et a la description des familles, avec 60 planches en taille-douce - Candolle, Augustin Pyramus de, 1778 -1841 (Chez Deterville, libraire, rue Hautefeuille, no.8, 1827)

Ostasiatische decapoden - Balss, Heinrich, 1886 -1957 (1922)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1912)

Outlines of British fungology; containing characters of above a thousand species of Fungi, and a complete list of all that have been described as natives of the British Isles - Berkeley, M. J. (Miles Joseph), 1803 -1889 (L. Reeve, 1860)

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, 1884)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1885)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1889)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1896)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1914)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1979)

Part I. The living flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (Wheeling news litho. co, 1913)

Pavli Iovii Comensis medici De Romanis Piscibus libellus ad Ludouicum Borbonium Cardinalem amplissimum - Giovio, Paolo, 1483 -1552 (In officina Frobeniana, 1531)

Paxton's Botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms. New ed. including all the new plants up to the present year - Paxton, Joseph, Sir, 1803 -1865 (Bradbury, Evans, & co, 1868)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Petite faune entomologique du Canada : précédée d'un traité élémentaire d'entomologie - Provancher, L. (Léon), 1820 -1892 (C. Darveau, 1886)

Pflanzenmikrochemie : ein Hilfsbuch beim mikrochemischen Studium pflanzlicher Objekte - Tunmann, Otto, 1867 -1919 (Gebrüder Borntraeger, 1913)

Die Pflanzenwelt - Warburg, Otto, 1859 -1938 (Bibliographisches Institut, 1913)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1907)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1906)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1821)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1855)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1858)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1861)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1854)

Die Pilze (Fungi) von Tirol, Vorarlberg und Liechtenstein - Magnus, P. (Paul), 1844 -1914 (Verlag der Wagner'schen Universitts-Buchh, 1905)

A plain and easy account of British fungi : with descriptions of the esculent and poisonous species, details of the principles of scientific classification, and a tabular arrangement of orders and genera - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Robert Hardwicke, 1862)

A plain and easy account of British fungi; with descriptions of the esculent and poisonous species. . .and a tabular arrangement of orders and genera - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (R. Hardwicke, 1862)

A plain and easy account of British Fungi : with especial reference to the esculent and economic species - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (W.H. Allen & co, 1884)

A plain and easy account of the British fungi : with descriptions of the esculent and poisonous species, details of the principles of scientific classification, and a tabular arrangement of orders and genera - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (1866)

A plain and easy account of the British fungi, with descriptions of the esculent and poisonous species, details of the principles of scientific classification, and a tabular arrangement of orders and genera - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Hardwicke, 1871)

A plain easy account of British fungi : with descriptions of the esculent and poisonous species - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (1862)

Plant life of Alabama : an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown Printing Co, 1901)

Plant life of Alabama, an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown printing co, 1901)

Plant life of Alabama. An account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state. Prepared in cooperationwith the Geological Survey of Alabama - Mohr, Charles (Charles Theodore), 1824 -1901 (Govt. Print. Off, 1901)

Plant morphology - Haupt, Arthur W. (Arthur Wing), 1894 - (McGraw-Hill, 1953)

Plant relations : a first book of botany - Coulter, John Merle, 1851 -1928 (D. Appleton and Company, 1910)

Plant structures; a second book of botany - Coulter, John Merle, 1851 -1928 (Appleton, 1906)

Plant structures; a second book of botany - Coulter, John Merle, 1851 -1928 (D. Appleton and company, 1900)

Plant structures; a second book of botany - Coulter, John Merle, 1851 -1928 (D. Appleton, 1904)

Plant studies; an elementary botany - Coulter, John Merle, 1851 -1928 (D. Appleton and Company, 1905)

Plant studies; an elementary botany - Coulter, John Merle, 1851 -1928 (D. Appleton and company, 1900)

Plant studies; an elementary botany - Coulter, John Merle, 1851 -1928 (D. Appleton and Company, 1900)

Plantarum vascularium genera :secundum ordines naturales digesta eorumque differentiae et affinitates tabulis diagnostacis expositae - Weidmann. (Libraria Weidmannia, 1836)

Plants; a text-book of botany - Coulter, John Merle, 1851 -1928 (D. Appleton and company, 1900)

Plants of Iowa; a preliminary list of the native and introduced plants of the state, not under cultivation - Greene, Wesley. (Bishard brothers, printers, 1907)