Manual of the southeastern flora :being descriptions of the seed plants growing naturally in Florida, Alabama, Mississippi, eastern Louisiana, Tennessee, North Carolina, South Carolina and Georgia - Small, John Kunkel, 1869 -1938 (The author, 1933)

Manual of the trees of North America (exclusive of Mexico) - Sargent, Charles Sprague, 1841 -1927 (Houghton Mifflin company, 1922)

Manual of the trees of North America (exclusive of Mexico) - Sargent, Charles Sprague, 1841 -1927 (Houghton, 1905)

Manual of the trees of North America (exclusive of Mexico) - Sargent, Charles Sprague, 1841 -1927 (Houghton, Mifflin, 1905)

Manual of vascular plants of the lower Yangtze Valley, China - Steward, Albert Newton, 1897 - (Oregon State College, 1958)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 1982)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 1983)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 1988)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 1989)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2010)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2011)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2013)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2015)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2020)

Maryland geological survey - Maryland Geological Survey. (The Johns Hopkins Press, 1906)

Maryland geological survey - Maryland Geological Survey. (The Johns Hopkins Press, 1916)

Maryland naturalist - Natural History Society of Maryland (The Society, 1998)

Maryland naturalist - Natural History Society of Maryland (The Society, 2002)

Maryland naturalist - Natural History Society of Maryland (The Society, 2003)

Maryland naturalist - Natural History Society of Maryland (The Society, 2012)

Materia medica of vegetable and animal origin with notes on the pharmacy of official drugs - Humphrey, John, 1862 - (Henry Kimpton, 1907)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica (Societas, 1876)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1904)

Mededeelingen uit 's Lands Plantentuin - 's Lands Plantentuin. (G. Kolff & Co, 1904)

Mededeelingen uitgaande van het Departement van Landbouw - Dutch East Indies. Departement van Landbouw. (G. Kolff & Co, 1910)

Mededeelingen uitgaande van het Departement van Landbouw - Dutch East Indies. Departement van Landbouw. (G. Kolff & Co, 1913)

Mededeelingen uitgaande van het Departement van Landbouw - Dutch East Indies. Departement van Landbouw. (G. Kolff & Co, 1914)

Mededeelingen van de Rijks Hoogere Land-, Tuin- en Boschbouwschool en van de daaraan verbonden instituten - Rijks Hoogere Land-, Tuin, en Boschbouwschool. (H. Veenman, 1908)

Mediteranski elementi u Zagrebackoj flori - Forenbacher, Aurel. (Tisak Dionicke Tiskare, 1911)

Mémoires du Museum national d'histoire naturelle. Série C, Sciences de la terre - Muséum national d'histoire naturelle (France) (Éd. du Museum, 1982)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1975)

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

Mémoires du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 2000)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1990)

Mémoires du Muséum national d'histoire naturelle. Série A, Zoologie - Muséum national d'histoire naturelle (France) (Éd. du Muséum, 1991)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1955)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1980)

Memoirs - Brooklyn Botanic Garden. (The Garden, 1918)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 1972)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 2008)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 1988)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 1996)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1959)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1975)

Memoirs of the New York Botanical Garden - New York Botanical Garden (The Garden, 1927)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2011)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1993)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1901)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1908)

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

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1916)

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 della Società italiana di scienze naturali e del Museo civico di storia naturale di Milano - Museo civico di storia naturale di Milano. (La Società, 1998)

Merritt Lyndon Fernald plant lists and field notes predominantly related to Gaspe Peninsula collecting trips - Fernald, Merritt Lyndon, 1873 -1950 (1905)

The Metaspermae of the Minnesota Valley. A list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota River - MacMillan, Conway, 1867 -1929 ([Harrison & Smith, State Printers], 1892)

The Metaspermae of the Minnesota Valley : a list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota River - MacMillan, Conway, 1867 -1929 (Geological and Natural History Survey of Minnesota, 1892)

The Metaspermae of the Minnesota Valley; a list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota River - MacMillan, Conway, 1867 -1929 ([Harrison & Smith, State Printers], 1892)

The Metaspermae of the Minnesota valley; a list of the higher seed-producing plants indigenous to the drainage-basin of the Minnesota river - MacMillan, Conway, 1867 -1929 ([Harrison & Smith, State Printers], 1892)

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

mian xiang 21 shi ji de zhong guo sheng wu duo yang xing bao hu - Xu, Zhihong (zhong guo lin ye chu ban she, 2000)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1963)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1969)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1970)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1971)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1974)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1975)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1976)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1977)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1978)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1979)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1980)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1982)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1983)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1984)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1985)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1986)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1987)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1989)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1990)