Maryland : a journal of natural history - Natural History Society of Maryland (Natural History Society of Maryland, 1944)

Maryland birdlife - Maryland Ornithological Society. (Maryland Ornithological Society, 1972)

Maryland birdlife - Maryland Ornithological Society. (Maryland Ornithological Society, 1993)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 1998)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2003)

Maryland naturalist - Natural History Society of Maryland (The Society, 1948)

Maryland naturalist - Natural History Society of Maryland (The Society, 1987)

Maryland naturalist - Natural History Society of Maryland (The Society, 1993)

Maryland naturalist - Natural History Society of Maryland (The Society, 2005)

McCain Valley wildlife habitat management plan : a Sikes Act project - United States. Bureau of Land Management. (U.S. Department of the Interior, Bureau of Land Management, Riverside District, 1978)

Meadowlark - Illinois Ornithological Society. (Illinois Ornithological Society, 2000)

Meadowlark - Illinois Ornithological Society. (Illinois Ornithological Society, 2012)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1966)

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 - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1995)

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, 1982)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1988)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 1959)

Memoirs of the Nuttall Ornithological Club - Nuttall Ornithological Club. (The Club, 1932)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 1975)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1965)

Memórias do Instituto Butantan - Instituto Butantan (O Instituto, 1957)

Merriam's Shrew (Sorex merriami) in the diet of a Mexican Spotted Owl (Strix occidentalis lucida) from Grant County, New Mexico - Geluso, Keith (Museum of Texas Tech University, 2016)

Methodology in mammalian genetics - Burdette, Walter J. (Holden-Day, 1963)

Mice and voles prefer spruce seeds : study in Maine suggests an explanation for the predominance of balsam fir seedlings in regeneration - Northeastern Forest Experiment Station (Radnor, Pa.) (Northeastern Forest Experiment Station, 1960)

Mice of the genus Peromyscus in Guadalupe Mountains National Park, Texas - Cornely, John E. (Texas Tech Press, 1981)

Microscopical diagnosis - Stowell, Charles H. (Charles Henry), 1850 -1932 (G.S. Davis, 1882)

The migrations of animals from sea to land - Pearse, A. S. (Arthur Sperry), 1877 -1956 (Duke university press, 1936)

The minds and manners of wild animals; a book of personal observations - Hornaday, William T. (William Temple), 1854 -1937 (C. Scribner's Sons, 1922)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1952)

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, 1958)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1961)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1963)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1967)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1969)

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, 1973)

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

Mission du Service Geographique de l'Armée pour la mesure d'un arc de méridien équatorial en Amérique du Sud sous le contrôle scientifique de l'Académie des Sciences, 1899-1906 - France. (Gauthier-Villars, Imprimeur Libraire du Bureau des Longitudes, de l'Ecole Polytechnique, 1910)

Die Mittel zur Bekämpfung der Pflanzenkrankheiten - Hollrung, M. (Max), 1858 -1937 (P. Parey, 1914)

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

Monograph of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The Museum, 1972)

Monthly report offices of forest experiment stations and dendrology - United States. Forest Service. (1939)

Monthly wildlife research letter - Illinois. Natural History Survey Division (The Dept. and the Survey, 1965)

A morphologic and morphometric analysis of the "Sorex vagrans species complex" in the Pacific Coast region - Carraway, Leslie N. (Texas Tech University Press, 1990)

Morphological variation in peromyscus spicilegus - Owen, Robert D. (Museum of Texas Tech University, 1996)

Movements, populations, and habitat preferences of three species of pocket mice (Perognathinae) in the Big Bend Region of Texas - Texas Tech University. Natural Science Research Laboratory. (Museum of Texas Tech University, 2011)

Multivariate analysis of Pleistocene and recent coyotes (Canis Latrans) from California - Giles, Eugene. (University of California Press, 1960)

Museum bulletin - New York State Museum. (University of the State of New York, 1907)

Mutations and evolution - Gates, R. Ruggles (Reginald Ruggles), 1882 -1962 (W. Wesley & Son, 1921)

Name that animal; a guide to the identification of the common land and fresh-water animals of the United States, with special reference to the area east of the Rockies - Driver, Ernest Charles, 1899 - (1950)

National Boll Weevil Cooperative Control Program : final environmental impact statement-1991 - United States. Animal; Plant Health Inspection Service. (U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 1991)

National Boll Weevil Cooperative Control Program : implementation of the program in Alabama : 1991 supplement to the draft environmental impact statement of 1989 (APHIS DEIS 89-001) - United States. Animal; Plant Health Inspection Service. (U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 1991)

The National geographic magazine - National Geographic Society (U.S.) (National Geographic Society, 1918)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1905)

Natural history - Pimentel, Richard A. (Reinhold Pub. Corp, 1963)

Natural history - American Museum of Natural History (American Museum of Natural History, 1920)

The natural history of Mexican rattlesnakes - University of Kansas. Museum of Natural History. (University of Kansas, 1979)

Natural history of the king rail - Meanley, Brooke (Bureau of Sport Fisheries and Wildlife, 1969)

Natural history of the Tres Marias Islands, Mexico - Nelson, Edward William, 1855 -1934 (Government Printing Office, 1899)