A monograph of the jacamars and puff-birds, or families Galbulidæ and Bucconidæ - Sclater, Philip Lutley, 1829 -1913 (Published for the author by R.H. Porter [etc, 1882)

A monograph of the Trochilidae, or family of humming-birds. Supplement - Sharpe, Richard Bowdler, 1847 -1909 (Henry Sothern & Co, 1887)

A monograph of the Trogonidæ or trogons - Gould, John 1804 -1881 (1875)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1848)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1848)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1853)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1853)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1877)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1868)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1877)

Monographiæ phanerogamarum : Prodromi nunc continuatio, nunc revisio - Candolle, Alphonse de, 1806 -1893 (vol.1-8, G. Masson ; vol.9, Masson & Cie, 1881)

Monographiæ phanerogamarum : Prodromi nunc continuatio, nunc revisio - Candolle, Alphonse de, 1806 -1893 (vol.1-8, G. Masson ; vol.9, Masson & Cie, 1883)

Monographiæ phanerogamarum : Prodromi nunc continuatio, nunc revisio - Candolle, Alphonse de, 1806 -1893 (vol.1-8, G. Masson ; vol.9, Masson & Cie, 1891)

Monographiæ phanerogamarum : Prodromi nunc continuatio, nunc revisio - Candolle, Alphonse de, 1806 -1893 (vol.1-8, G. Masson ; vol.9, Masson & Cie, 1896)

Monographie des melastomacées, comprenant toutes les plantes de cet ordre récueillies jusqu'à ce jour, et notamment au Mèxique, dans l'Ile de Cuba, dans les provinces de Caracas, de Cumana, et de Barcèlone, aux Andes de la Nouvelle-Grenade, de Quito et du Pérou, et sur les bords du Rio-Negro, de l'Orénoque et de la rivière des Amazones - Humboldt, Alexander von, 1769 -1859 (Gide, 1833)

Monographie du tabac comprenant l'historique, les propriétés thérapeutiques, physiologiques, et toxicologiques du tabac; la description des principales espèces employées; sa culture, sa préparation et l'origine de son usage; son analyse chimique, ses falsifications, sa distribution géographique, son commerce et la législation qui le concerne - Fermond, Charles 1810 -1882 (Impr. centrale de N. Chaix et ce, 1857)

Monographs in systematic botany from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 1999)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1824)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1827)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1830)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1831)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1821)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1833)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1834)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1835)

Moscosoa : contribuciones científicas del Jardín Botánico Nacional "Dr. Rafael M. Moscoso" - Jardín Botánico Nacional "Dr. Rafael M. Moscoso." (El Jardín, 1986)

Moscosoa : contribuciones científicas del Jardín Botánico Nacional "Dr. Rafael M. Moscoso" - Jardín Botánico Nacional "Dr. Rafael M. Moscoso." (El Jardín, 2008)

Moscosoa : contribuciones científicas del Jardín Botánico Nacional "Dr. Rafael M. Moscoso" - Jardín Botánico Nacional "Dr. Rafael M. Moscoso." (El Jardín, 2013)

The mosquitoes of North and Central America and the West Indies - Dyar, Harrison G. (Harrison Gray), 1866 -1929 (The Carnegie Institution of Washington, 1912)

The mosquitoes of North and Central America and the West Indies - Dyar, Harrison G. (Harrison Gray), 1866 -1929 (Carnegie Institution of Washington, 1912)

Musée botanique. De M. Benjamin Delessert. Notices sur les collections de plantes et la bibliothèque qui le composent; contenant en outre des documents sur les principaux herbiers d'Europe et l'exposé des voyages entrepris dans l'intérêt de la botanique - Delessert, Benjamin, baron, 1773 -1847 (Librairie de Fortin, Masson et Cie, 1845)

Museum Heineanum : Verzeichniss der ornithologischen Sammlung des Oberamtmann Ferdinand Heine, auf Gut St. Burchard vor Halberstadt - Cabanis, Jean Louis, 1816 -1906 (In Commission bei R. Frantz, 1859)

The museum of natural history; being a popular account of the structure, habits, and classification of the various departments of the animal kingdom: quadrupeds, birds, reptiles, fishes, shells, and insects, including the insects destructive to agriculture - Holder, Joseph B. (Joseph Bassett), 1824 -1888 (J. S. Virtue, 1877)

The museum of natural history, with introductory essay on the natural history of the primeval world : being a popular account of the structure, habits, and classification of the various departments of the animal kingdom, quadrupeds, birds, reptiles, fishes, shells, and insects, including the insects destructive to agriculture - White, Adam, 1817 -1879 (William MacKenzie, 1869)

Mycotaxon (Mycotaxon, 2015)

Les mystères de L'Océan - Mangin, Arthur, 1824 -1887 (Mame, 1868)

Les mystères de l'océan - Mangin, Arthur, 1824 -1887 (A. Mame, 1864)

Mystic isles of the South Seas - O'Brien, Frederick, 1869 -1932 (The Century Co, 1921)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1879)

A narrative of travels on the Amazon and Rio Negro : with an account of the native tribes, and observations on the climate, geology, and natural history of the Amazon Valley - Wallace, Alfred Russel, 1823 -1913 (Ward, Lock, 1889)

A narrative of travels on the Amazon and Rio Negro : with an account of the native tribes, and observations of the climate, geology, and natural history of the Amazon Valley - Wallace, Alfred Russel, 1823 -1913 (Ward, Lock, 1889)

A narrative of travels on the Amazon and Rio Negro, with an account of the native tribes, and observations on the climate, geology, and natural history of the Amazon valley - Wallace, Alfred Russel, 1823 -1913 (Reeve and co, 1853)

The National geographic magazine - National Geographic Society (U.S.) (National Geographic Society, 1896)

The National geographic magazine - National Geographic Society (U.S.) (National Geographic Society, 1921)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1900)

The natural history of plants - Baillon, H. (Henri), 1827 -1895 (L. Reeve & co, 1871)

The natural history of plants - Baillon, H. (Henri), 1827 -1895 (L. Reeve & co, 1875)

The natural history of the fishes of Guiana - Schomburgk, Robert H. (Robert Hermann), 1804 -1865 (W.H. Lizars, 1841)

Natural selection and tropical nature - Wallace, Alfred Russel, 1823 -1913 (Macmillan and co, 1891)

Natural selection and tropical nature : essays on descriptive and theoretical biology - Wallace, Alfred Russel, 1823 -1913 (Macmillan, 1891)

Natural selection and tropical nature; essays on descriptive and theoretical biology - Wallace, Alfred Russel, 1823 -1913 (Macmillan and Co, 1895)

A natural system of botany; or, A systematic view of the organisation, natural affinities, and geographical distribution of the whole vegetable kingdom - Lindley, John, 1799 -1865 (Longman, Rees, Orme, Brown, Green, and Longman, 1836)

A natural system of botany, or, A systematic view of the organization, natural affinities, and geographical distribution, of the whole vegetable kingdom : together with the uses of the most important species in medicine, the arts, and rural or domestic economy - Lindley, John, 1799 -1865 (Longman, Rees, Orme, Brown, Green, and Longman, 1836)

La naturaleza; periódico científico del Museo Nacional de Historia Natural y de la Sociedad Mexicana de Historia Natural - Sociedad Mexicana de Historia Natural. (Impr. de I. Escalante, 1871)

La naturaleza; periódico científico del Museo Nacional de Historia Natural y de la Sociedad Mexicana de Historia Natural - Sociedad Mexicana de Historia Natural. (Impr. de I. Escalante, 1885)

La naturaleza; periódico científico del Museo Nacional de Historia Natural y de la Sociedad Mexicana de Historia Natural - Sociedad Mexicana de Historia Natural. (Impr. de I. Escalante, 1910)

A naturalist in the Guianas - André, Eugène. (Smith, Elder, & co, 1904)

The naturalist's library - Lizars, W. H. 1788 -1859 (W. H. Lizars; [etc., etc.], 1833)

A naturalist's sojourn in Jamaica - Gosse, Philip Henry, 1810 -1888 (Longman, Brown, Green and Longmans, 1851)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1875)

Das natürliche Pflanzensystem : ein Versuch, die gegenseitigen Verwandtschaften der Pflanzen aufzufinden ... : mit Berücksichtigung der arzneilichen und überhaupt anwendbaren Gewächse, nebst einer historischen Einleitung ... - Heynhold, Gustav. (In der Arnoldischen Buchh, 1840)

Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1887)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1901)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1917)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1954)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1967)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1966)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1998)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1999)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 2004)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 2005)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 2006)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 2017)

The nearctic species of Nebria Latreille (Coleoptera: Carabidae: Nebriini) : classification, phylogeny, zoogeography, and natural history - Kavanaugh, David H (University of Alberta, Dept of Entomology, 1978)

Nederlandsch Tijdschrift voor Liefhebbers der Jagt und Visscherei

Neue Denkschriften der Allg. Schweizerischen Gesellschaft für die Gesammten Naturwissenschaften = Nouveau mémoires de la Société helvétique des sciences naturelles - Allgemeine Schweizerische Gesellschaft für die Gesamten Naturwissenschaften. (Schweizerische Gesellschaft für die Gesammten Naturwissenschaften, 1837)

Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde - Bronn, H. G. (Heinrich Georg), 1800 -1862 (E. Schweizerbart's Verlagshandlung, 1852)

Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde - Bronn, H. G. (Heinrich Georg), 1800 -1862 (E. Schweizerbart's Verlagshandlung, 1875)

A new collared lizard (Tropidurus, Tropiduridae) endemic to the western Bolivian Andes and its implications for seasonally dry tropical forests - Rodrigues, Miguel Trefaut Urbano (American Museum of Natural History, 2018)

The New Mexico botanist - New Mexico State University. Cooperative Extension Service. (Range Science Herbarium and Cooperative Extension Service, 2023)

New Mexico wilderness study area proposals : Socorro District - Kennedy, Arlen P. (U.S. Department of the Interior, Bureau of Land Management, Socorro District, 1980)

A new montane species of spiny pocket mouse (Rodentia, Heteromyidae, Heteromys) from northwestern Costa Rica - Timm, Robert M. (American Museum of Natural History, 2006)

A new species of spiny pocket mouse (Heteromyidae, Heteromys) endemic to western Ecuador - Anderson, Robert P. (American Museum of Natural History, 2002)

New tracks in North America :a journal of travel and adventure whilst engaged in the survey for a southern railroad to the Pacific ocean during 1867/8 - Bell, William Abraham (Chapman and Hall, 1869)

News letter - United States. Bureau of Entomology; Plant Quarantine. (Bureau of Entomology and Plant Quarantine, 1934)

Nomenclator botanicus :enumerans ordine alphabetico nomina atque synonyma, tum generica tum specifica, et a Linnaeo et recentioribus de re botanica scriptoribus plantis phanerogamis imposita - Steudel, Ernst Gottlieb, 1783 -1856 (Sumptibus J.G. Cottae, 1821)

Nomenclator botanicus; enumerans ordine alphabetico nomina atque synonyma tum generica tum specifica et a Linnaeo et recentrioribus de re botanica scriptoribus plantis phanerogamis imposita - Steudel, Ernst Gottlieb, 1783 -1856 (sumtibus I.G. Cottae, 1821)

Nomenclator botanicus hortensis : oder, alphabetische und synonymische aufzählung der in den gärten Europa's cultivirten gewächse, nebst angabe ihres autors, ihres vaterlandes, ihrer dauer und cultur - Heynhold, Gustav, 1800 -approximately 1860 (Arnoldischen Buchhandlung, 1846)

Nomenclator botanicus. Nominum ad finem anni 1858 publici juris factorum, classes, ordines, tribus, familias, divisiones, genera, subgenera vel sectiones designatium enumeratio alphabetica. Adjectis auctoribus, temporibus, locis systematicis, apud varios, notis literariis atque etymologicis et synonymis - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischeri, 1873)

Nomenclator botanicus, seu, Synonymia plantarum universalis :enumerans ordine alphabetico nomina atque synonyma, tum generica tum specifica, et a Linnaeo et a recentioribus de re botanica scriptoribus plantis phanerogamis imposita - Steudel, Ernst Gottlieb, 1783 -1856 (typis et sumptibus J.G. Cottae, 1840)

Nomenclator heliceorum viventium : quo continetur nomina omnium hujus familiae generum et specierum hodie cognitarum, disposita ex affinitate naturali / Opus postumum Ludovici Pfeiffer - Clessin, Stephan, 1833 -1911 (Cassellis, 1878)

Nomenclator Musei Heineani Ornithologici; Verzeichniss der Vogel-Sammlung des Kgl. Oberamtmanns Ferdinand Heine - Reichenow, Anton, 1847 -1941 (R. Friedländer & Sohn, 1890)

Nomenclator reptilium et amphibiorum musei zoologici Berolinensis : Namenverzeichnis der in der zoologischen Sammlung der Koeniglichen Universität zu Berlin aufgestellten Arten von Reptilien und Amphibien nach ihren Ordnungen, Familien und Gattungen - Lichtenstein, Hinrich, 1780 -1857 (1856)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2000)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2006)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2007)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2010)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2011)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2012)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1910)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1981)

North American flora - New York Botanical Garden (New York Botanical Garden, 1935)

North American flora - New York Botanical Garden (New York Botanical Garden, 1916)

North American flora - New York Botanical Garden (New York Botanical Garden, 1924)

North American flora - New York Botanical Garden (New York Botanical Garden, 1944)

North American flora - New York Botanical Garden (New York Botanical Garden, 1918)

North American flora - New York Botanical Garden (New York Botanical Garden, 1914)

Notebooks of William Brewster - Brewster, William, 1851 -1919 (1883)

Notes of a botanist on the Amazon & Andes; being records of travel on the Amazon and its tributaries, the Trombetas, Rio Negro, Uaupâes, Casiquiari, Pacimoni, Huallaga and Pastasa; as also to the cataracts of the Orinoco, along the eastern side of the Andes of Peru and Ecuador, and the shores of the Pacific, during the years 1849-1864 - Wallace, Alfred Russel, 1823 -1913 (Macmillan and co., limited, 1908)

Notes of a military reconnoissance, from Fort Leavenworth, in Missouri, to San Diego, in California, including part of the Arkansas, Del Norte, and Gila rivers [House Report: Ex. doc. no.: 41] - Emory, William H. 1811 -1887 (Wendell and Van Benthuysen, 1848)

Notes on amphisbaenids (Amphisbaenia, Reptilia). 5, A redefinition and a bibliography of Amphisbaena alba LinneМЃ - Gans, Carl, 1923 -2009 (American Museum of Natural History, 1962)

Notes on South American caimans - Schmidt, Karl Patterson, 1890 -1957 (1928)