Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2015)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2016)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2017)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2018)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2019)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2020)

The Magazine of horticulture, botany, and all useful discoveries and improvements in rural affairs (Hovey and Co, 1864)

Major weed family identification guide - United States. Animal; Plant Health Inspection Service. Plant Protection; Quarantine Programs. (United States Dept. of Agriculture, 1980)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1893)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1897)

The Manchester flora : a descriptive list of the plants growing wild within eighteen miles of Manchester, with notices of the plants commonly cultivated in gardens ; preceded by an introduction to botany - Grindon, Leo H. (Leo Hartley), 1818 -1904 (William White, 1859)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2004)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2007)

Manual de plantas de Costa Rica - Hammel, Barry Edward, 1946 - (Missouri Botanical Garden, 2015)

A manual of botany: being an introduction to the study of the structure, physiology, and classification of plants - Balfour, John Hutton, 1808 -1884 (J. J. Griffin [etc.] 1851, 1851)

Manual of the Agromyzidae (Diptera) of the United States - United States. Agricultural Research Service. (U.S. Dept. of Agriculture, Agricultural Research Service, 1986)

Manual of the flora of the northern states and Canada - Britton, Nathaniel Lord, 1859 -1934 (H. Holt and Co, 1901)

Manual of the flora of the northern states and Canada - Britton, Nathaniel Lord, 1859 -1934 (H. Holt, 1907)

Manual of the flora of the northern states and Canada - Britton, Nathaniel Lord, 1859 -1934 (Holt, 1905)

Manual of the flora of the northern states and Canada, by Nathaniel Lord Britton ... - Britton, Nathaniel Lord, 1859 -1934 (H. Holt and Co, 1901)

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)

The Marine Mammal Commission compendium of selected treaties, international agreements, and other relevant documents on marine resources, wildlife, and the environment - U.S. Fish; Wildlife Service (The Commission, 1994)

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

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

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2016)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2018)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2019)

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

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)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1971)

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

Memoirs of Museum Victoria - Museum Victoria. (: Museum Victoria, 2022)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 2014)

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

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1989)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1920)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1918)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1880)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1912)

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)