Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1891)

Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1909)

Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1897)

Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1910)

Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1913)

Memorias de la Real Academia de Ciencias y Artes de Barcelona - Real Academia de Ciencias y Artes de Barcelona. (1895)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1880)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1882)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1879)

Memorie dell'Istituto geologico della R. Università di Padova - Università di Padova. Istituto geologico. (Società Cooperativa Tipografica, 1915)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1841)

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.], 1812)

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.], 1829)

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

Minutes - Conchological Club of Southern California. (The Club, 1950)

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

Miocene - Maryland Geological Survey. (John Hopkins Press, 1904)

Miocene - Maryland Geological Survey. (Johns Hopkins Press, 1904)

Mitteilungen der Bayerischen Staatssammlung für Paläontologie und Histor. Geologie - Bayerische Staatssammlung für Paläontologie und Historische Geologie München (Bayerische Staatssammlung für Paläontologie und Historische Geologie, 1964)

Mitteilungen der Bayerischen Staatssammlung für Paläontologie und Histor. Geologie - Bayerische Staatssammlung für Paläontologie und Historische Geologie München (Bayerische Staatssammlung für Paläontologie und Historische Geologie, 1978)

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

Mollusca - Fleming, John, 1785 -1857 ([Adam and Charles Black], 1830)

Mollusca & shells - Gould, Augustus A. (Augustus Addison), 1805 -1866 (Printed by C. Sherman, 1856)

Mollusca für 1901-1904 : geographische Verbreitung, Systematik und Biologie - Kobelt, Wilhelm, 1840 -1916 (Nicolai?, 1905)

Mollusca japonica descripta et tabulis tribus iconum illustrata a Guilielmo Dunker - Dunker, Wilhelm, 1809 -1885 (typis et sumtibus E. Schweizerbart, 1861)

The Mollusca of Dorsetshire : (marine, estuarine, freshwater, and land) and the Brachiopoda - Mansel-Pleydell, John Clavell, 1817 -1902 ("Dorset county chronicle" printing works, 1898)

The Mollusca of Dorsetshire (marine, estuarine, freshwater, and land) and the Brachiopoda - Mansel-Pleydell, John Clavell, 1817 -1902 ("Dorset County Chronicle" Print. Works, 1898)

The Mollusca of Funafuti, and supplement. From: The atoll of Funafuti, Ellice group: its zoology, botany, ethnology, and general structure based on collections made by Mrs. Charles Hedley, of the Australian museum, Sydney, N. S. W - Australian Museum (1896)

The Mollusca of the Firth of Clyde, being a catalogue of recent marine species found in that estuary - Brown, Alfred (Hugh Hopkins, 1878)

Mollusca testacea marium britannicorum : a history of the British marine testaceous Mollusca distributed in their natural order, on the basis of the organization of the animals : with references and notes on every British species - Clark, William, of Bath. (J. Van Voorst, 1855)

Mollusca: The Southern Synthesis [Fauna of Australia. Vol. 5] - Australian Biological Resources Study (CSIRO Publishing, 1998)

I molluschi dei terreni terziarii del Piemonte e della Liguria - Bellardi, Luigi, 1818 -1889 (Stamperia Reale, 1897)

I molluschi dei terreni terziarii del Piemonte e della Liguria - Bellardi, Luigi, 1818 -1889 (Stamperia Reale, 1904)

Molluscorum Britanniæ synopsis : A synopsis of the Mollusca of Great Britain - Gray, John Edward 1800 -1875 (J. van Voorst, 1852)

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)

Molluscous animals, including shell fish : containing an exposition of their structure, systematical arrangement, physical distribution, and dietetical uses, with a reference to the extinct races - Fleming, John, 1785 -1857 (Black, 1837)

Molluscous animals, including shellfish ... Forming the article 'Mollusca' in the 7th ed. of the Encyclopædia britannica - Fleming, John, 1785 -1857 (A. and C. Black, 1837)

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

Mollusques - Pelseneer, Paul, 1863 -1945 (Rueff, 1897)

Mollusques de la France et des régions voisines - Vayssière, A. (Albert Jean Baptiste Marie), 1854 -1942 (O. Doin et fils, 1913)

Les mollusques : décrits et figurés d'après la classification - Cuvier, Georges, baron, 1769 -1832 (J. B. Baillière, 1868)

Mollusques éocéniques de la Loire-inférieure - Cossmann, M. (Maurice), 1850 -1924 (Pequignot, 1895)

Les mollusques marins du Roussillon - Dautzenberg, Ph. (Philippe), 1849 -1935 (J.-B. Baillière, 1882)

Les mollusques marins du Roussillon - Dautzenberg, Ph. (Philippe), 1849 -1935 (J.-B. Baillière, 1887)

Moluscos marinos de España, Portugal y las Baleares - Hidalgo, J. G, (Joaquín González) (Impr. de M. Ginesta, 1870)

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, 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 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, 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, 1872)

A monograph of the Mollusca from the Great Oolite : chiefly from Minchinhampton and the coast of Yorkshire - Lycett, John, 1882 (Printed for the Palæontographical society, 1850)

A monograph of the Mollusca from the Great Oolite chiefly from Minchinhampton and the coast of Yorkshire - Lycett, John, 1882 (Printed for the Palæontographical society, 1850)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1848)

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, 1872)

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

A monograph of the Permian fossils of England - Palaeontographical Society (Great Britain) (Printed for the Palæontographical Society, 1850)

Monograph on the Lias Ammonites of the British islands - Wright, Thomas, 1809 -1884 (Printed for the Palæontographical society, 1879)

Monographie de l'étage bathonien dans de Département de la Moselle - Jourdy, Emile, 1845 -1941 (Au local de la Société et F. Savy, 1869)

Monographie der Petrefacten der Aachener Kreideformation - Naturhistorischer Verein der preussischen Rheinlande und Westfallens. (in Kommission bei Henry & Cohen, 1847)

Monographie des Gastéropodes et des Céphalopodes de la Craie Supérieure du Limbourg suivie d'une Description de quelques espèces de Crustacés du même dépôt crétacé ... - Binkhorst Van Den Binkhorst, Jan Theodoor 1810 -1876 (C. Muquardt, 1861)

Morphologisches Jahrbuch (Wilhelm Engelmann, 1876)

Muséum-Demidoff (mis en ordre systématique et décrit par G. Fischer) : Ou catalogue ... des curiosités de la Nature et de l'Art. données à l'Université impériale de Moscou par ... P. de Demidoff - Fischer von Waldheim, Gotthelf, 1771 -1853 (1807)

Museum Normanianum, or A catalogue of the invertebrata of Europe, and the Arctic and North Atlantic oceans, which are contained in the collection of the Rev. Canon A. M. Norman, ... . I.-XII. Printed for private distribution - Norman, Alfred Merle, 1831 -1918 (Morton, printer, 1886)

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)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1869)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1885)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1887)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1892)