Malacologia - Institute of Malacology. (Institute of Malacology], 2000)

Malacologia - Institute of Malacology. (Institute of Malacology], 2001)

Malacologia - Institute of Malacology. (Institute of Malacology], 2002)

Malacologia - Institute of Malacology. (Institute of Malacology], 2003)

Malacologia - Institute of Malacology. (Institute of Malacology], 2004)

Malacologia - Institute of Malacology. (Institute of Malacology], 2005)

Malacologia - Institute of Malacology. (Institute of Malacology], 2006)

Malacologie de l'Algérie, ou, Histoire naturelle des animaux mollusques terrestres et fluviatiles recueillis jusqu'à ce jour dans nos possessions du nord de l'Afrique - Bourguignat, Jules René, 1829 -1892 (Challamel aine,́, 1864)

Malacologie du lac des Quatre-Cantons et de ses environs - Bourguignat, J. R. (Jules René), 1829 -1892 (J.B. Baillière et fils, 1862)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1854)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1858)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1860)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1865)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1868)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1870)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1871)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1876)

Malaysian parasites - Audy, J. Ralph. ([Institute for Medical Research], 1954)

A manual of conchology, according to the system laid down by Lamarck, with the late improvements by De Blainville exemplified and arranged for the use of students - Wyatt, Thomas, A. M. (Harper & brothers, 1838)

Manual of conchology, structural and systematic : with illustrations of the species - Tryon, George W., (George Washington), 1838 -1888 (Published by the Author, Academy of Natural Sciences, 1879)

A manual of the common invertebrate animals, exclusive of insects - Pratt, Henry Sherring, 1859 - (A.C. McClurg & co, 1916)

A manual of the common invertebrate animals, exclusive of insects - Pratt, Henry Sherring, 1859 - (A.C. McClurg & Co, 1923)

A manual of the land and fresh-water shells of the British Islands, with figures of each of the kinds - Gray, John Edward 1800 -1875 (Longman, Orme, Brown, Green, and Longmans, 1840)

Margareti Cornelii Verloren, Rheno-Trajectini : Responsio ad quaestionem zoölogicam, ab ordine nobilissimo disciplinarum mathematicarum et physicarum in Academia Lugduno-Batava A. MDCCCXXXVI propositam - Verloren, Margaretus Cornelis, 1816 -1900 (1837)

Mathematische und naturwissenschaftliche Berichte aus Ungarn - Magyar Tudományos Akadémia. (R. Friedländer & Sohn [etc.], 1901)

Mathematische und naturwissenschaftliche Berichte aus Ungarn - Magyar Tudományos Akadémia. (R. Friedländer & Sohn [etc.], 1909)

Memórias do Instituto Oswaldo Cruz - Instituto Oswaldo Cruz (1922)

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)

Mémoires de l'Académie impériale des sciences de St.-Pétersbourg 7e série - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (L'Académie, 1887)

Mémoires de la Société géologique de France - Société géologique de France. (F.-G. Levrault, 1833)

Mémoires de la Société géologique de France - Société géologique de France. (F.-G. Levrault, 1842)

Mémoires de la Société nationale des sciences naturelles et mathématiques de Cherbourg - Société nationale des sciences naturelles et mathématiques de Cherbourg. (J. B. Baillière, 1905)

Mémoires du Muséum national d'histoire naturelle Série A Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1971)

Mémoires du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 2000)

Mémoires du Muséum national d'histoire naturelle Série A Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1980)

Mémoires du Muséum national d'histoire naturelle Série A Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1981)

Mémoires du Muséum national d'histoire naturelle Série A Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1982)

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Memoirs of the National Museum, Melbourne - National Museum (Australia) (The Museum, 1939)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1973)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1986)

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1970)

Memorias de la Real Academia de Ciencias y Artes de Barcelona - Real Academia de Ciencias y Artes de Barcelona. (1921)

Memorie della Reale Accademia delle Scienze dell'Istituto di Bologna, Classe di Scienze Fisiche - R. Accademia delle scienze dell'Istituto di Bologna. (1892)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1889)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1897)

The Mesozoic and Tertiary of southern England : the Dorset coast and Isle of Wight - Keen, Michael C. (Michael Charles) (School of Earth Sciences, Thames Polytechnic, 1988)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1970)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1881)

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)

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.], 1834)

Minutes - Conchological Club of Southern California. (The Club, 1941)

Minutes - Conchological Club of Southern California. (The Club, 1946)

Minutes - Conchological Club of Southern California. (The Club, 1948)

Minutes - Conchological Club of Southern California. (The Club, 1951)

Minutes - Conchological Club of Southern California. (The Club, 1953)

Minutes - Conchological Club of Southern California. (The Club, 1955)

Minutes - Conchological Club of Southern California. (The Club, 1958)

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

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Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1959)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1964)

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

Miscellaneous publications - University of Michigan. Museum of Zoology. (The University, 1916)

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Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1884)