Memorias de la Real Academia de Ciencias y Artes de Barcelona - Real Academia de Ciencias y Artes de Barcelona. (1919)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1930)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1935)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1937)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1966)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1877)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1878)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1913)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1903)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1910)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1914)

Memorie della Società italiana di scienze naturali (G. Bernardoni, 1871)

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, 1982)

Der Mensch, seine abstammung und gesittung - Rolle, Friedrich, 1827 -1887 (J. C. Hermann, 1866)

Die menschenähnlichen Zähne aus dem Bohnerz der Schwäbischen Alb - Branca, Wilhelm, 1844 -1928 (E. Schweizerbart'sche Verlagshandlung (E. Koch), 1898)

Les merveilles de la nature : l'homme et les animaux : description populaire des races humaines et des règne animal - Brehm, Alfred Edmund, 1829 -1884 (J.-B. Bailliere et Fils, 1893)

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

The micrographic dictionary : a guide to the examination and investigation of the structure and nature of microscopic objects - Griffith, J. W. (John William) (John van Voorst, 1860)

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 - Griffith, J. W. (John William) (John Van Voorst, 1856)

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)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1886)

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

Mionelminthes, Trichoplax und Trematodes - Pagenstecher, H. Alexander (Heinrich Alexander), 1825 -1889 (C.F. Winter, 1893)

Mission Pavie Indo-Chine, 1879-1895. Études diverses - Pavie, Auguste, 1847 -1925 (E. Leroux, 1898)

Mitteilungen der Bayerischen Staatssammlung für Paläontologie und Histor. Geologie - Bayerische Staatssammlung für Paläontologie und Historische Geologie München (Bayerische Staatssammlung für Paläontologie und Historische Geologie, 1966)

Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark - Molisch, Hans, 1856 -1937 (1892)

Mittheilungen aus dem Jahrbuche der Kgl. ungarischen Geologischen Anstalt - Magyar Királyi Földtani Intézet. (Buchdruckerei der Stum A.-G., [etc.], 1902)

Mittheilungen aus dem Jahrbuche der Kgl. ungarischen Geologischen Anstalt - Magyar Királyi Földtani Intézet. (Buchdruckerei der Stum A.-G., [etc.], 1873)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1882)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1888)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1896)

The mmmalia in their relation to primeval times - Schmidt, Oscar, 1823 -1886 (Kegan Paul, Trench & co, 1885)

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

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, 1890)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1904)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1906)

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

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1914)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1921)

Monografía de los mamíferos de Yucatán - Gaumer, George F, 1851 -1929 (Departamento de talleres gráficos de la Secretaría de fomento, 1917)

A monograph of the British pleistocene mammalia - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1866)

A monograph of the British pleistocene mammalia - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1872)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1866)

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, 1878)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1887)

Monograph on the British fossil elephants. By A. Leith Adams - Adams, Andrew Leith, 1827 -1882 (Printed for the Palæontographical society, 1881)

A monograph on the structure and development of the shoulder-girdle and sternum on the Vertebrata - Parker, William Kitchen William Kitchen Parker 1823 -1890 (R. Hardwicke, 1868)

Monographie der Nematoden - Schneider, Anton, 1831 -1890 (G. Reimer, 1866)

Monographie der oestriden - Kaiserlich-Königliche Zoologisch-Botanische Gesellschaft in Wien. (Druck von C. Ueberreuter, 1863)

Monographs of the United States Geological Survey - Geological Survey (U.S.) (Govt. Print. Off, 1886)

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

Morphologische Arbeiten (G. Fischer, 1896)

Morphologisches Jahrbuch (Wilhelm Engelmann, 1876)

The morphology and evolutional significance of the pineal body : being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence - Tilney, Frederick, 1875 -1938 (The Wistar Institute of Anatomy and Biology, 1919)

The morphology and evolutional significance of the pineal body; being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence - Tilney, Frederick, 1875 -1938 (The Wistar Institute of Anatomy and Biology, 1919)

Mostly mammals, zoological essays - Lydekker, Richard, 1849 -1915 (Dodd Mead, 1903)

Mostly mammals, zoological essays - Lydekker, Richard, 1849 -1915 (Hutchinson & Co, 1903)

The mountain - Jackson, Robert Montgomery Smith, 1815 -1865 (J. B. Lippincott & Co, 1860)

Mrs. Loudon's Entertaining naturalist, being popular descriptors, tales, and anecdotes of more than five hundred animals - Dallas, W. S. (William Sweetland), 1824 -1890 (Bell & Daldy, 1867)

Musée Vrolik. Catalogue de la collection d'anatomie humaine, comparée et pathologique de M.M. Ger. et W. Vrolik ... - Vrolik, W. (Willem), 1801 -1863 (Impr. de W. J. de Roever Kröber, 1865)

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)

Mycotaxon (Mycotaxon, 2017)

Die Mysterien der Europäischen Insectenwelt. Ein geheimer Schlüssel für Sammler aller Insectenordnungen und Stände, behufs des Fangs, des Aufenthalts-orts, der Wohnung, Tag- und Jahreszeit ... - Gistel, Johannes, 1809 - (Druck und Verlag von Tobias Dannheimer, 1856)

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