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

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, 1996)

Memorie di matematica e di fisica della Societ`a italiana delle Scienze - Società Italiana delle Scienze. (Società Italiana delle Scienze, 1848)

Menzies' journal of Vancouver's voyage, April to October, 1792 - Newcombe, C. F. 1851 -1924 (Printed by W.H. Cullin, 1923)

Methods for obtaining and handling marine eggs and embryos [by] Donald P. Costello and Catherine Henley - Marine Biological Laboratory (Woods Hole, Mass.) (1971)

Methods for obtaining and handling marine eggs and embryos [by] D.P. Costello [and others - Marine Biological Laboratory (Woods Hole, Mass.) (1957)

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

Microdoride mediterranea; o, Descrizione de poco ben conosciuti od affatto ignoti viventi minuti e micoscropici [that is, microscopici] del Meditterraneo - Costa, Oronzio Gabriele, 1789 -1867 (dalla Stamperia dell'iride, 1861)

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 - Berkeley, M. J. (Miles Joseph), 1803 -1889 (J. Van Voorst, 1883)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (Blakiston, 1891)

Microscopical studies in marine zoology - Hornell, James, 1865 -1949 (Biological Station, 1901)

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)

Minnesota (Upper Mississippi Refuge), July 1926 - Nelson, Edward William, 1855 -1934 (1926)

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

Miscellanea conchyliologica : ofte verzameling van onderscheidene naamlysten van hoorens en schelpen ... - F. C. M. (Friedrich Christian Meuschen), 1719 -1811 (By J.C. Sepp, Boekverkooper, 1766)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1920)

Mitteilungen aus dem Naturwissenschaftlichen Verein für Neuvorpommern und Rügen in Griefswald ... - Naturwissenschaftlicher Verein für Neuvorpommern und Rügen, Greifswald. (1869)

Mitteilungen aus der zoologischen Sammlung des Museums für Naturkunde in Berlin - Museum für Naturkunde in Berlin. (In Kommission bei R. Friedländer, 1900)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1879)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1882)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1884)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1886)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1888)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1889)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1899)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1903)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1908)

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

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1877)

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

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, 1896)

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

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)

Mollusques - Cuvier, Georges, baron, 1769 -1832 (Chez les frères Levrault, 1802)

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

Mollusques marins des Iles Açores - Drouët, Henri, 1829 -1900 (Baillière, 1858)

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

Mollusques vivants et fossiles - Orbigny, Alcide Dessalines d', 1802 -1857 (Adolphe Delahays, 1855)

Mollusques vivants et fossiles : ou, description de toutes les espèces de coquilles et de mollusques ; classées suivant leur distribution géologique et géographique - Orbigny, Alcide Dessalines d', 1802 -1857 (Gide et Cie., éditeurs, 1845)

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 del viaje al Pacífico : verificado de 1862 á 1865 por una comisión de naturalistas enviada por el Gobierno Español - Hidalgo, J. G, (Joaquín González) (Impr. de Miguel Ginesta, 1869)

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, 1908)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1917)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1922)

A monograph of the Capitonidae or Scansorial Barbets - Marshall, G. F. L. (George Frederick Leycester), 1843 -1934 ([s.n.], 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, 1850)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1851)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1854)

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

A monograph on the fossil Lepadidæ, or, Pedunculated Cirripedes of Great Britain - Darwin, Charles, 1809 -1882 (Printed for the Palæontographical Society, 1851)

Monograph on the fossil reptilia of the London clay - Owen, Richard, 1804 -1892 (Palaeontographical Society, 1850)

A monograph on the Polychaeta of Southern Africa - Day, J. H. (British Museum (Natural History), 1967)

A monograph on the Polychaeta of southern Africa - Day, J. H. (BM(NH), 1967)

A monograph on the sub-class Cirripedia, with figures of all the species - Darwin, Charles, 1809 -1882 (Ray society, 1851)