Manuel de conchyliologie et paléontologie conchlyliologique - Chenu, Jean-Charles, 1808 -1879 (V. Masson, 1859)

Manuel de conchyliologie et paléontologie conchlyliologique - Chenu, Jean-Charles, 1808 -1879 (Victor Masson, 1859)

Manuel de conchyliologie, ou, Histoire naturelle des mollusques vivants et fossiles - Woodward, S. P. (Samuel Peckworth), 1821 -1865 (Savy, 1870)

Marine shells of South Africa: a catalogue of all the known species - Sowerby, G. B. (George Brettingham), 1843 -1921 (Sowerby, 1892)

Marvels of insect life a popular account of structure and habit - Step, Edward, 1855 -1931 (W. Briggs, 1915)

Marvels of insect life ; a popular account of structure and habit - Step, Edward, 1855 -1931 (R. M. McBride, 1916)

Maryland naturalist - Natural History Society of Maryland (The Society, 1993)

Medical zoology, and mineralogy : or, illustrations and descriptions of the animals and minerals employed in medicine, and of the preparations derived from them: including also an account of animal and mineral poisons: with figures coloured from nature - Royal College of Physicians of Edinburgh. (John Churchill, 1838)

Medical zoology, and mineralogy; or, Illustrations and descriptions of the animals and minerals employed in medicine, and of the preparations derived from them: including also an account of animal and mineral poisons - Stephenson, John, 1790 -1864 (J. Wilson, 1832)

Megachile glaesaria, the first megachilid bee fossil from amber (Hymenoptera, Megachilidae) - Engel, Michael S. (American Museum of Natural History, 1999)

Memórias do Instituto Oswaldo Cruz - Instituto Oswaldo Cruz (1916)

Mémoires couronnés et mémoires des savants étrangers / publiés par l'Académie royale des sciences, des lettres et des beaux-arts de Belgique - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1843)

Mémoires couronnés et mémoires des savants étrangers / publiés par l'Académie royale des sciences, des lettres et des beaux-arts de Belgique - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1850)

Memoires de la Société de physique et d'histoire naturelle de Genève - Société de physique et d'histoire naturelle de Genève. (Georg [etc.], 1841)

Mémoires de la Société géologique de France - Société géologique de France. (F.-G. Levrault, 1844)

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Mémoires de la Société nationale des sciences naturelles et mathématiques de Cherbourg - Société nationale des sciences naturelles et mathématiques de Cherbourg. (J. B. Baillière, 1879)

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Mémoires du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Editions du Museum, 1941)

Mémoires du Muséum national d'histoire naturelle. Série C, Sciences de la terre - Muséum national d'histoire naturelle (France) (Ed. du Muséum, 1969)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1967)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1974)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1979)

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Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1976)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1921)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1922)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1929)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1939)

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1931)

Memórias do Museu Goeldi (Museu Paraense) de História Natural e Ethnographia (O Museu, 1896)

Memorias sobre la historia natural de la isla de Cuba, acompañadas de sumarios latinos y extractos en frances - Poey, Felipe, 1799 -1891 (Impr. de Barcina, 1851)

Memorias sobre la historia natural de la isla de Cuba, acompañadas de sumarios latinos y extractos en frances - Poey, Felipe, 1799 -1891 (Impr. de Barcina, 1856)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1825)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1853)

Memorie della Società italiana di scienze naturali (G. Bernardoni, 1867)

Mende natural history vocabulary - Migeod, F. W. H. (Frederick William Hugh), 1872 -1952 (Kegan Paul, Trench, Trübner, 1913)

Merveilles de la nature : les insectes, les myriopodes, les arachnides et les crustaces - Brehm, Alfred Edmund, 1829 -1884 (J.-B. Baillière et Fils, 49 rue Hautefeuille, près du boulevard Saint-Germain, 1882)

Mesozoic fossils - Geological Survey of Canada (1876)

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

Microplankton de la mer Flamande - Meunier, Alphonse, 1857 -1918 (Hayez, imprimeur de l'Académie royale de Belgique, 1913)

Midden-Sumatra. Reizen en onderzoekingen der Sumatra-expeditie, uitgerust door het Aardrijkskundig genootschap, 1877-1879, beschreven door de leden der expeditie, onder toezicht van Prof. P.J. Veth - Veth, Pieter Johannes, 1814 -1895 (E.J. Brill, 1881)

Midden-Sumatra. Reizen en onderzoekingen der Sumatra-expeditie, uitgerust door het Aardrijkskundig genootschap, 1877-1879, beschreven door de leden der expeditie, onder toezicht van Prof. P.J. Veth - Veth, Pieter Johannes, 1814 -1895 (E. J. Brill, 1881)

Mind in evolution - Hobhouse, L. T. (Leonard Trelawney), 1864 -1929 (Macmillan, 1915)

The mineral conchology of Great Britain; or, Coloured figures and descriptions of those remains of testaceous animals or shells, which have been preserved at various times and depths in the earth - Sowerby, James de Carle, 1787 -1871 (Printed by B. Meredith [etc.], 1821)

The mineral conchology of Great Britain; or, Coloured figures and descriptions of those remains of testaceous animals or shells, which have been preserved at various times and depths in the earth - Sowerby, James de Carle, 1787 -1871 (Printed by B. Meredith [etc.], 1818)

Minutes - Conchological Club of Southern California. (The Club, 1944)

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Mitteilungen aus dem Zoologischen Museum in Berlin - Zoologisches Museum in Berlin. (In Kommission bei R. Friedländer, 1905)

Mitteilungen aus dem Zoologischen Museum in Berlin - Zoologisches Museum in Berlin. (In Kommission bei R. Friedländer, 1906)

Mitteilungen aus dem Zoologischen Museum in Berlin - Zoologisches Museum in Berlin. (In Kommission bei R. Friedländer, 1912)

Mitteilungen der Botanischen Staatssammlung München - Botanische Staatssammlung München. (H. Merxmüller, 1985)

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Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1913)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1843)

Mittheilungen des Münchener Entomologischen Vereins - Münchener Entomologischer Verein. (T. Ackermann, 1880)

The Mollusca and the Brachiopoda - Dall, William Healey, 1845 -1927 (Harvard College, Museum of Comparative Zoology], 1908)

Mollusca marina : Beschreibung und Abbildung neuer oder wenig gekannter Meeres-Conchylien - Dunker, Wilhelm, 1809 -1885 (Fischer, 1858)

The Mollusca of the Chicago area, by Frank Collins Baker ... - Baker, Frank Collins, 1867 -1942 (1898)

I molluschi dei terreni terziarii del Piemonte e della Liguria - Bellardi, Luigi, 1818 -1889 (Stamperia Reale, 1900)

I molluschi dei terreni terziarii del Piemonte e della Liguria - Bellardi, Luigi, 1818 -1889 (Stamperia Reale, 1901)

Molluscorum systema et catalogus. System und aufzählung sämmtlicher conchylien der sammlung vonFr. Paetel. Zur belebung des interesses für malakozoologie nach dessen manuscript hrsg. von dr. L. W. Schaufuss - Schaufuss, L. W. (Ludwig Wilhelm), 1833 -1890 (O. Weiske, 1869)

The mollusks of western North America - Carpenter, Philip P. (Philip Pearsall), 1819 -1877 (Smithsonian Institution, 1872)

The mollusks of western North America embracing the second report made to the British Association on this subject, with other papers, reprinted by permission, with a general index - British Association for the Advancement of Science. (Smithsonian Institution, 1872)

Los moluscos de la República de Panamá - Zetek, James, 1886 - (Imp. nacional, 1918)

Money in bees in Australasia. A practical treatise on the profitable management of the honey bee in Australasia - Rayment, Tarlton, 1882 -1964 (Whitcombe and Tombs, limited, 1916)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1910)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1911)

A monograph of the Baltic amber bees and evolution of the Apoidea (Hymenoptera) - Engel, Michael S. (American Museum of Natural History, 2001)

A monograph of the British Desmidiaceæ - West, G. S. (George Stephen), 1876 -1919 (The Ray Society, 1912)

A monograph of the Crag mollusca; or, Descriptions of shells from the middle and upper Tertiaries of the east of England - Wood, Searles V. (Searles Valentine), 1798 -1880 (Palaeontographical Society, 1850)

A monograph of the Crag Mollusca : with descriptions of shells from the upper Tertiaries of the British Isles - Wood, Searles V. (Searles Valentine), 1798 -1880 (Printed for the Palæontographical society, 1848)

A monograph of the Crag Mollusca; with descriptions of shells from the upper Tertiaries of the British Isles - Wood, Searles V. (Searles Valentine), 1798 -1880 (Printed for the Palaeontographical Society, 1851)

A monograph of the Entomostraca of the Cretaceous formation of England - Jones, T. Rupert (Thomas Rupert), 1819 -1911 (Printed for the Palæontographical Society, 1849)

A monograph of the Eocene bivalves of England - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1861)

A monograph of the Eocene bivalves of England - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1877)

A monograph of the Foraminifera of the Crag - Sherborn, Charles Davies, 1861 -1942 (Printed for the Palaeontographical Society, 1866)

Monograph of the naiades of Pennsylvania ... - Ortmann, Arnold E. 1863 -1927 (Board of Trustees of the Carnegie Institute, 1919)

A monograph of the Najades of Pennsylvania - Ortmann, Arnold E. 1863 -1927 (Published by the authority of the Board of Trustees of the Carnegie Institute, 1911)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1849)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1850)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1853)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1864)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1890)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1891)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1896)

A monograph of the Tertiary Entomostraca of England - Jones, T. Rupert (Thomas Rupert), 1819 -1911 (Printed for the Palæontographical society, 1856)