Die Molluskenfauna des Schweizerischen Nationalparks - Bütikofer, Ernst, 1885 -1960 (1920)

Die Molluskenfauna des Vierwaldstättersees - Surbeck, Georg, 1875 - (Impr. W. Kündig & fils, 1899)

Molluskenfauna von Schlesien - Merkel, Eduard (J.U. Kern's Verlag, 1894)

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)

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

Les mollusques d'eau douce du Canada - National Museum of Natural Sciences (Canada) (Musée national des sciences naturelles, Musées nationaux du Canada, 1981)

Mollusques de l'Afrique équatoriale : de Moguedouchou a Bagamoyo et de Bagamoyo au Tanganika - Bourguignat, J. R. (Jules René), 1829 -1892 (D. Dumoulin et cie, 1889)

Les mollusques : introduction a l'étude de leur, organisation, développement, classification, affinités et principaux types - Coupin, Henri Eugène Victor, 1868 - (George Carré, 1892)

Mollusques nouveaux, litigieux, ou peu connus - Bourguignat, J. R. (Jules René), 1829 -1892 (Chez F. Savy, 1860)

Les mollusques : organisation, développement, classification, affinités et principaux types - Coupin, Henri, 1868 -1937 (G. Carré et C. Naud, 1890)

Les mollusques : organisation, développement, classification, affinités et principaux types - Coupin, Henri, 1868 -1937 (G. Carré et C. Naud, 1892)

Mollusques terrestres et fluviatiles - Germain, Louis, 1878 -1942 ([Éd. Blondel La Rougery], 1924)

Mollusques terrestres et fluviatiles de la Côte-d'Or - Drouët, Henri, 1829 -1900 (J.B. Baillière et fils; F. Savy, 1867)

Mollusques terrestres et fluviatiles de Syrie - Gadeau de Kerville, Henri, 1858 -1940 (J.-B. Baillière et fils, 1921)

Mollusques terrestres et fluviatiles de Syrie - Gadeau de Kerville, Henri, 1858 -1940 (J.-B. Baillière et fils, 1922)

Mollusques terrestres et fluviatiles - Germain, Louis, 1878 -1942 ([Angers, Imprimerie F. Gaultier et A. Thébert], 1920)

Mollusques terrestres et fluviatiles recueillis par M. Paul Soleillet dans son voyage au Choa (Éthiopie méridionale) - Soleillet, Paul, 1842 -1886 (Tremblay, 1885)

Moluscos de la Republica Oriental del Uruguay: catálogo de las especies que hasta hoy se han encontrado en el territorio de dicha república - Corsi, A. Formica. (Establecimiento Tipo-litográfico Oriental, 1900)

Moluscos terrestres, fluviais e das águas salobras : 2. fasc - Nobre, Augusto, 1865 -1946 (Livraria Ferin, Baptista, Torres, 1913)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1890)

Monograph of American Corbiculadae (Recent and fossil) - Making of America Project (Smithsonian Institution, 1865)

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 fossil Estheriae - Jones, T. Rupert (Thomas Rupert), 1819 -1911 (The Palæontographical society, 1862)

Monograph of the land & freshwater Mollusca of the British isles - Roebuck, William Denison, 1851 -1919 (Taylor brothers, 1894)

Monograph of the land & freshwater Mollusca of the British isles - Roebuck, William Denison, 1851 -1919 (Taylor brothers, 1900)

Monograph of the order Pholadacea, and other papers - Tryon, George W., (George Washington), 1838 -1888 (Merrihew & Thompson, Printers, 1862)

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, 1862)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1877)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1913)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1919)

A monograph of the phyllopod crustacea of North America, with remarks on the order of phyllocarida - Packard, A. S. (Alpheus Spring), 1839 -1905 (s.n, 1877)

Monographia molluscorum terrestrium fluvialium, lacustrium, insularium Maderensium - Castello de Paiva, Antonio da Costa Paiva, barão de, 1806 -1879 (Olisipone, 1867)

Monographie der capitelliden des golfes von Neapel und der angrenzenden meeres-abschnitte, nebst untersuchungen zur vergleichenden anatomie und physiologie - Eisig, Hugo 1847 -1920 (Friedländer, 1887)

Monographie des genres Galatea et Fischeria - Bernardi, A.-C., -1863 (L. Tinterlin, 1860)

Monographs of the United States Geological Survey - Geological Survey (U.S.) (Govt. Print. Off, 1882)

Monographs of the United States Geological Survey - Geological Survey (U.S.) (Govt. Print. Off, 1888)

Monographs of the United States Geological Survey - Geological Survey (U.S.) (Govt. Print. Off, 1899)

Monthly report of the Department of Agriculture ... - United States. Dept. of Agriculture. Division of Statistics. (G.P.O, 1863)

Morphologisches Jahrbuch (Wilhelm Engelmann, 1876)

The Museum (W.F. Webb, 1898)

The Museum (W.F. Webb, 1899)

Museum bulletin - New York State Museum. (University of the State of New York, 1913)

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 mussel fauna of the Kankakee basin - Wilson, Charles Branch, 1861 -1941 (Govt. print. off, 1912)

Muzeum imienia Dzieduszyckich we Lwowie - Muzeum imienia Dzieduszyckich we Lwowie. (Muzeum imienia Dzieduszyckich, 1892)

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

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1870)