Nomina systematica generum Lepidopterorum, tam viventium quam fossilium : secundum ordinem alpabeticum disposita, adjectis auctoribus, libris in quibus reperiunter, anno editionis, etymologia et familiis ad quas pertinent - Agassiz, Louis, 1807 -1873 (s.n, 1840)

Nota lepidopterologica - Societas Europaea Lepidopterologica (2001)

Notes et mémoires - Haut Commissariat de la République française en Syrie et au Liban, Service des travaux publics, Section d'études géologiques - Haut-commissariat de la République française en Syrie et au Liban Section d'études géologiques (Revue de géographie physique et de géologie dynamique, 1933)

Notes from the Leyden Museum - Rijksmuseum van Natuurlijke Historie te Leiden. (E.J. Brill, 1914)

Notizie intorno alle conchiglie fossili di Monte Pellegrino e Ficarazzi - Di Monterosato, T. A. (Tommasso Allery) 1841 -1927 (Tip. M. Amenta, 1872)

Notizie intorno alle conchiglie mediterranee - Di Monterosato, T. A. (Tommasso Allery) 1841 -1927 (M. Amenta, 1872)

Nouveau cours élémentaire de géologie : ouvrage accompagné de planches. Tome premier [-deuxième] - Huot, Jean Jacques Nicolas, 1790 -1845 (1837)

Nouveau dictionnaire d'histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc (Chez Deterville, 1817)

Nouvelles annales du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (Roret, 1833)

Nouvelles suites à Buffon (Roret, 1854)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1898)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1931)

Nuovi annali delle scienze naturali (1838)

Nuovi annali delle scienze naturali (1852)

Nuovi annali delle scienze naturali (1854)

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

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

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)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1846)

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

Om Limfjordens tidligere og nuværende marine fauna, med særligt hensyn til bløddyraunaen - Denmark. Ministeriet for kirke- og undervisningsvæsenet. (Gyldendal, 1884)

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 reptiles and batrachians - Garman, Samuel, 1843 -1927 (Printed for the Museum?, 1883)

On the reptiles and Batrachians of North America - Garman, Samuel, 1843 -1927 (Major, Johnston & Barrett, Yeoman, 1883)

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, 1956)

The orchid hybrids. Second supplement - Hansen, Geo. (George), 1863 -1908 (Geo. Hansen, 1897)

The orchid hybrids enumeration and classification of all hybrids of orchids published up to October 15, 1895 - Hansen, Geo. (George), 1863 -1908 (Dulau, 1895)

The Orchid review (Orchid Review ltd.], 1895)

The Orchid review (Orchid Review ltd.], 1903)

The Orchid review (Orchid Review ltd.], 1911)

The orchid stud-book: an enumeration of hybrid orchids of artificial origin, with their parents, raisers, date of first flowering, references to descriptions and figures, and synonymy. With an historical introduction and 120 figures and a chapter on hybridising and raising orchids from seed - Rolfe, Robert Allen, 1855 -1921 (F. Leslie & co, 1909)

The orchid-stud book : an enumeration of hybrid orchids of artificial origin ... : with an historical introduction ... and a chapter on hybridising and raising orchids from seed - Hurst, C. C. 1870 -1947 (F. Leslie, 1909)

Le orchidee - Pucci, Angiolo, 1851 - (U. Hoepli, 1905)

Die Orchideen :ihre Beschreibung, Kultur und Zu¨chtung. Handbuch fu¨r Orchideenliebhaber, Zu¨chter und Botaniker - Schlechter, Rudolf, 1872 -1925 (P. Parey, 1915)

Les orchidées exotiques et leur culture en Europe - Cogniaux, Alfred, 1841 -1916 (l'Auteur, 1894)

Orchidophile; journal des amateurs d'orchideés - Godefroy-Lebeuf, A. (Alexandre), 1844 -1903 (1887)

Orchidophile; journal des amateurs d'orchideés - Godefroy-Lebeuf, A. (Alexandre), 1844 -1903 (1892)

Orchids; being the report on the Orchid Conference held at South Kensington (Macmillan & Co, 1886)

Orchids: their culture and management - Watson, William, 1858 -1925 (L. U. Gill, 1903)

Organic remains of a former world : an examination of the mineralized remains of the vegetables and animals of the Antediluvian world; generally termed extraneous fossils - Parkinson, James, 1755 -1824 (M.A. Nattali, 1833)

Organic remains of a former world. An examination of the mineralized remains of the vegetables and animals of the antediluvian world; generally termed extraneous fossils - Parkinson, James, 1755 -1824 (Sherwood, Neely and Jones, etc, 1811)

Otia conchologica : descriptions of shells and mollusks, from 1839 to 1862 - Gould, Augustus A. (Augustus Addison), 1805 -1866 (Gould and Lincoln, 1862)

Otia conchologica : descriptions of shells and mollusks from 1839 to 1862 / by Augustus A. Gould, M.D - Gould, Augustus A. (Augustus Addison), 1805 -1866 (1846)

Outlines of oryctology. An introduction to the study of fossil organic remains; especially those found in the British strata: intended to aid the student in his inquiries respecting the nature of fossils, and their connection with the formation of the earth ... - Parkinson, James, 1755 -1824 (M.A. Nattali; [etc., etc, 1831)

Outlines of oryctology : An introduction to the study of fossil organic remains; especially those found in the British strata ... / by James Parkinson - Parkinson, James, 1755 -1824 (1831)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1809)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1896)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1898)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1908)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1909)

Palaeontographica (Theodor Fischer, 1846)

Palaeontographica. Supplement (Theodor Fischer, 1870)

Palaeontographica (Theodor Fischer, 1886)

Palaeontographica (Theodor Fischer, 1897)

Palaozoologie : Entwurf einer systematischen Darstellung der Fauna der Vorwelt - Giebel, C. (Christoph), 1820 -1881 (Nulandt'sche buchandlung (L. Garcke), 1846)

Paléontologie française : description zoologique et géologique de tous les animaux mollusques et rayonnés fossiles de France : comprenant leur application à la reconnaissance des couches - Orbigny, Alcide Dessalines d', 1802 -1857 (Chez l'auteur, 1840)

Panamic Province molluscan literature : additions and changes from ... - Skoglund, Carol (San Diego Shell Club, 2001)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1877)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1915)

Papers and proceedings of the Royal Society of Van Diemen's Land - Royal Society of Tasmania. (Royal Society of Van Diemen's Land, 1852)

The Pelecypoda of the Miocene of Maryland - Glenn, Leonidas Chalmers, 1871 - (1904)

Pelecypoda of the St. Maurice and Claiborne stages - Harris, Gilbert D. (Gilbert Dennison), 1864 -1952 (Harris co., Cornell University, 1919)

Pélécypodes du montien de Belgique - Cossmann, M. (Maurice), 1850 -1924 (Imprimerie Polleunis & Ceuterick, Dreesen & DeSmet, successeurs, 1908)

Perú : Yaguas-Cotuhé - Field Museum of Natural History. (Field Museum, Environment, Culture, and Conservation, 2011)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1922)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1980)

The pictorial museum of animated nature ... - Knight, Charles, 1791 -1873 (C. Knight, 1844)

The pictorial museum of animated nature - Knight, Charles, 1791 -1873 (C. Cox, 1844)