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Memoirs of the Carnegie Museum - Carnegie Institute. Board of Trustees. (Published by the authority of the Board of Trustees of the Carnegie Institute, 1935)

Memoirs of the Nuttall Ornithological Club - Nuttall Ornithological Club. (The Club, 1886)

Memoirs of the Nuttall Ornithological Club - Nuttall Ornithological Club. (The Club, 1905)

Memoirs of the Wernerian Natural History Society - Wernerian Natural History Society. ([The Society], 1824)

Memoirs of the Wernerian Natural History Society - Wernerian Natural History Society. ([The Society], 1838)

Memoirs of the Wistar Institute of Anatomy and Biology - Wistar Institute of Anatomy; Biology. ([s.n.], 1919)

Memoirs relating to European and Asiatic Turkey, and other countries of the East - Walpole, Robert, 1781 -1856 (Longman, Hurst, Rees, Orme, and Brown, 1818)

Memorias del Instituto Español de Oceanografía - Instituto Español de Oceanografía ([Instituto Español de Oceanografía], 1922)

Memorie - Museo civico di storia naturale di Milano. (U. Hoepli, 1901)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1884)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1903)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1908)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1911)

Memorie della Società italiana di scienze naturali e del Museo civico di storia naturale di Milano - Museo civico di storia naturale di Milano. (La Società, 2006)

Memorie di matematica e di fisica della Societ`a italiana delle Scienze - Società Italiana delle Scienze. (Società Italiana delle Scienze, 1794)

Memories of the months. Sixth series - Maxwell, Herbert, Sir, 1845 -1937 (E. Arnold, 1919)

Meyers Konversations-Lexikon : ein Nachschlagewerk des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Bibliographisches Institut, 1896)

Meyers Konversations-Lexikon : eine Encyklopädie des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Verlag des Bibliographischen Instituts, 1890)

The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Berkeley, M. J. (Miles Joseph), 1803 -1889 (J. Van Voorst, 1875)

The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Griffith, J. W. (John William) (John Van Voorst, 1856)

The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Berkeley, M. J. (Miles Joseph), 1803 -1889 (J. Van Voorst, 1883)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1882)

Mindeskrift i anledning af hundredaaret for Japetus Steenstrups fodsel udg. af en kreds af naturforskere ved Hector F.E. Jungersen og Eug. Warming. Udgivelsen bekostet af Carlsbergfondet - Warming, Eugenius, 1841 -1924 (B. Lunos bogtrykkeri, 1914)

Mionelminthes, Trichoplax und Trematodes - Pagenstecher, H. Alexander (Heinrich Alexander), 1825 -1889 (C.F. Winter, 1890)

Mionelminthes, Trichoplax und Trematodes - Pagenstecher, H. Alexander (Heinrich Alexander), 1825 -1889 (C.F. Winter, 1893)

Miscellanea entomologica; revue entomologique internationale - Union entomologique. (1898)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1956)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1957)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1961)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1965)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1891)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1892)

Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark - Molisch, Hans, 1856 -1937 (1902)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1885)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1887)

Mlekopitaiushchiia Kavkazskago kraia - Sakartvelos muzeumi (Impr. d'État], 1920)

Le monde de la mer - Frédol, Alfred. (L. Hachette et cie, 1865)

Le monde de la mer - Moquin-Tandon, Alfred, 1804 -1863 (L. Hachette, 1866)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1897)

A monograph of the seal-islands of Alaska - Elliott, Henry Wood, 1846 -1930 (Govt. Print. Off, 1882)

Monographie der Nematoden - Schneider, Anton, 1831 -1890 (G. Reimer, 1866)

Monographs of North American Rodentia - Coues, Elliott, 1842 -1899 (Govt. print. off, 1877)

Monographs of North American rodentia - Coues, Elliott, 1842 -1899 (G.P.O, 1877)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1808)

Morphologische Arbeiten (G. Fischer, 1892)

Morphologische Arbeiten (G. Fischer, 1896)

Morphologische Arbeiten (G. Fischer, 1898)

Morphologisches Jahrbuch (Wilhelm Engelmann, 1876)

The morphology and evolutional significance of the pineal body; being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence - Tilney, Frederick, 1875 -1938 (The Wistar Institute of Anatomy and Biology, 1919)

Mrs. Loudon's Entertaining naturalist, being popular descriptors, tales, and anecdotes of more than five hundred animals - Dallas, W. S. (William Sweetland), 1824 -1890 (Bell & Daldy, 1867)

Musée Vrolik. Catalogue de la collection d'anatomie humaine, comparée et pathologique de M.M. Ger. et W. Vrolik ... - Vrolik, W. (Willem), 1801 -1863 (Impr. de W. J. de Roever Kröber, 1865)

Museum Leskeanum : regnum animale quod ordine systematico - Leske, Nathanael Gottfried, 1751 -1786 (Sumptibus haeredum I.G. Mülleri, 1789)

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, 1859)

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)

My happy hunting grounds, with notes on sport and natural history - Gathorne-Hardy, A. E. (Alfred Erskine), 1845 -1918 (Longmans, Green and Co, 1914)

Narrative of a journey across the Rocky Mountains, to the Columbia River, and a visit to the Sandwich Islands, Chili, &c.; with a scientific appendix - Townsend, John Kirk, 1809 -1851 (H. Perkins, 1839)

National contingency plan for response to unusual marine mammal mortality events - U.S. Fish; Wildlife Service (U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, [Office of Protected Resources], 1996)

The National geographic magazine - National Geographic Society (U.S.) (National Geographic Society, 1916)

The native and wild mammals of Connecticut - Adams, Sherman W. (Sherman Wolcott), 1836 -1898 (Case, Lockwood, & Brainard, 1896)

The native mammals of Rhode Island - Newport Natural History Society. (1900)

Natur Cymru : a review of wildlife in Wales - Natur Cymru, (Natur Cymru, 2002)

Natur Cymru : a review of wildlife in Wales - Natur Cymru, (Natur Cymru, 2011)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1896)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1898)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1904)

Natural history - Bernard, Henry Meyners, 1853 -1909 (D. Appleton and company, 1897)

Natural history - Fletcher, L. 1854 -1921 (Printed by order of the Trustees of the British Museum, 1907)

Natural history - Fletcher, L. 1854 -1921 (Printed by order of the Trustees of the British Museum, 1910)

Natural history. Mammalia - Gosse, Philip Henry, 1810 -1888 (Society for Promoting Christian Knowledge, 1848)

The natural history and behavior of the California sea lion - Peterson, Richard S. (American Society of Mammalogists, 1967)

Natural history - Lydekker, Richard, 1849 -1915 (Hutchinson, 1897)

Natural history. A manual of zoölogy for schools, colleges, and the general reader - Tenney, Sanborn, 1827 -1877 (Scribner, Armstrong & co, 1872)

The natural history of animals : (class Mammalia–animals which suckle their young) in word and picture - Vogt, Karl Christoph, 1817 -1895 (Blackie & son, ltd, 1887)

The natural history of animals : (class Mammalia–animals which suckle their young), in word and picture - Vogt, Karl Christoph, 1817 -1895 (Blackie & Son, 1889)

The natural history of animals (class Mammalia-animals which suckle their young), in word and picture - Vogt, Karl Christoph, 1817 -1895 (Blackie, 1887)

The natural history of animals: the animal life of the world in its various aspects and relations - Ainsworth-Davis, J. R. (James Richard), 1861 -1934 (The Gresham Publishing Company, 1903)