Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2005)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2008)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2012)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2013)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2016)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2018)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2019)

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1974)

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1980)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1960)

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

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1971)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1973)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1974)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1975)

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

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1978)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1982)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1983)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1988)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1990)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1991)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1992)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1993)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1893)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1900)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1886)

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, 1984)

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, 2004)

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, 2006)

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, 2008)

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, 2011)

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, 2012)

The Merck/Merial manual for pet health - Kahn, Cynthia M., (Merck & Co, 2007)

Metabarcoding and metagenomics (Pensoft Publishers, 2025)

The Mexican and Central American lizards of the genus Sceloporus - Smith, Hobart M. (Hobart Muir), 1912 -2013 (Field Museum of Natural History, 1939)

Mexico, August 10 - November 22, 1893 - Goldman, Edward Alphonso, 1873 -1946 (1893)

Michell's seeds, bulbs, plants, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry F. Michell Co, 1933)

Michell's seeds, bulbs, plants, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry F. Michell Co, 1934)

Michell's seeds, bulbs, plants, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry F. Michell Co, 1935)

Michell's seeds, bulbs, plants, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry F. Michell Co, 1936)

Michigan grown shrubs, vines, ornamental trees, evergreens, perennials roses, fruitstock : special price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Cottage Gardens, 1930)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1880)

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

Miscellaneous publication - University of Kansas. Museum of Natural History. (University of Kansas, Natural History Museum, 1995)

Miscellaneous publication - University of Kansas. Museum of Natural History. (University of Kansas, Natural History Museum, 1996)

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, 1978)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1994)

Missing link found : the second ancestor of Gymnophthalmus underwoodi (Squamata, Teiidae), a South American unisexual lizard of hybrid origin - Dessauer, Herbert C. (American Museum of Natural History, 1993)

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

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)

Modern biology - Moon, Truman Jesse, 1879 -1946 (Holt, Rinehart and Winston, 1965)

Molecular diversity within Melanomys caliginosus (Rodentia: Oryzomyini) : evidence for multiple species - Bradley, Robert D. (Museum of Texas Tech University, 2008)

Molecular evidence for paraphyly in Nyctomys sumichrasti : support for a new genus of vesper mice? - Ordóñez-Garza, Nicté (Museum of Texas Tech University, 2011)

A molecular perspective on the phylogeny of the girdled lizards (Cordylidae, Squamata) - Frost, Darrel R. (American Museum of Natural History, 2001)

Molecular systematics of bryophytes - Magill, Robert E. (Missouri Botanical Garden Press, 2004)

Molecular systematics of mouse opossums (Didelphidae, Marmosa) : assessing species limits using mitochondrial DNA sequences, with comments on phylogenetic relationships and biogeography - Jansa, Sharon A. (American Museum of Natural History, 2010)

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

A monograph of Carboniferous and Permian Foraminifera (the genus Fusulina excepted) - Brady, Henry Bowman, 1835 -1891 (Printed for the Palæontographical Society, 1876)

A monograph of Christmas Island (Indian Ocean) - British Museum (Natural History). Department of Geology. (Printed by order of the Trustees, 1900)

A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, 1894)

A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, 1911)

A monograph of the gymnoblastic or tubularian hydroids / by George James Allman - Allman, George James, 1812 -1898 (1872)

A monograph of the gymnoblastic or tubularian hydroids / by George James Allman - Allman, George James, 1812 -1898 (1871)

A monograph of the Mycetozoa, being a descriptive catalogue of the species in the herbarium of the British Museum. Illustrated with seventy-eight plates and fifty-one woodcuts - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, Sold by Longmans [etc.], 1894)

A monograph of the Mycetozoa : a descriptive catalogue of the species in the Herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees of the British Museum, 1911)

A monograph of the Odontophorinæ, or, Partridges of America - Gould, John 1804 -1881 (Printed by Richard and John E. Taylor, 1850)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1876)

A monograph of the Trochilidæ, or family of humming-birds - Gould, John 1804 -1881 (Printed by Taylor and Francis, 1849)

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)

Montana amphibian and reptile status assessment, literature review, and conservation plan - United States. Bureau of Land Management. (Montana Natural Heritage Program, 2009)