Marvels of animal life - Holder, Charles Frederick, 1851 -1915 (S. Low, Marston, Searle, and Rivington, 1885)

Maryland naturalist - Natural History Society of Maryland (The Society, 1958)

Maryland naturalist - Natural History Society of Maryland (The Society, 1959)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1972)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1973)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1974)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1976)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1980)

MCZ newsletter - Harvard University. Museum of Comparative Zoology. (The Museum, 1986)

Medical and physical researches, or, Original memoirs in medicine, surgery, physiology, geology, zoology, and comparative anatomy - Harlan, Richard, 1796 -1843 (printed by L.R. Bailey, 1835)

The Medusae / by Henry B. Bigelow. With forty-eight plates ... - Bigelow, Henry B. (Henry Bryant), 1879 -1967 (Printed for the Museum, 1909)

The Australian Museum Memoir (Australian Museum, 1944)

The Australian Museum Memoir (Australian Museum, 1945)

Mémoire sur les formes cérébrales propres aux carnivores vivants et fossiles : suivi de remarques sur la classification de ces animaux - Gervais, Paul, 1816 -1879 (Libraire des sciences naturelles, 1870)

Mémoire sur les mollusques nouveaux du Cambodge - Deshayes, G. P. (Gérard Paul), 1795 -1875 (Librairie des sciences naturelles, 1874)

Mémoires du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1997)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1965)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1969)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1976)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1985)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1987)

Memoirs of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (The Academy, 1848)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1881)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1908)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1902)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1906)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1912)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1990)

Memoirs of the Wistar Institute of Anatomy and Biology - Wistar Institute of Anatomy; Biology. ([s.n.], 1919)

Memoirs read before the Boston Society of Natural History - Boston Society of Natural History. ([Boston Society of Natural History], 1904)

Memorias de la Sociedad Cubana de Historia Natural "Felipe Poey." - Museo Poey. (La Sociedad, 1916)

Memorias de la Sociedad Cubana de Historia Natural "Felipe Poey." - Museo Poey. (La Sociedad, 1917)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1932)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1934)

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

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

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1976)

Memorias sobre la historia natural de la isla de Cuba, acompañadas de sumarios latinos y extractos en frances - Poey, Felipe, 1799 -1891 (Impr. de Barcina, 1851)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1899)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1917)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1866)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1885)

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, 1937)

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, 1941)

Memorie di matematica e di fisica della Societ`a italiana delle Scienze - Società Italiana delle Scienze. (Società Italiana delle Scienze, 1820)

Memorie di matematica e di fisica della Societ`a italiana delle Scienze - Società Italiana delle Scienze. (Società Italiana delle Scienze, 1823)

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. Baillière et Fils, 1878)

Meyers Konversations-Lexikon : ein Nachschlagewerk des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Bibliographisches Institut, 1896)

Mimicry, selektion, Darwinismus. Erklärung seiner thesen über mimicry (sensu generali) auf dem im jahre 1901 in Berlin stattgefundenen 5en Internationalen zoologischen kongress vorgetragen von M. C. Piepers - Piepers, M. C. (Marinus Cornelis), 1835 -1919 (E. J. Brill, 1903)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1956)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1970)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1971)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1974)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1978)