The London Clay flora - Reid, Eleanor Mary, 1860 -1953 (British Museum, 1933)

The lower Eocene floras of southeastern North America - Berry, Edward Wilber, 1875 -1945 (Govt. Print. Off, 1916)

The Lower Tertiary floras of southern England - British Museum (Natural History). Department of Palaeontology. [Plants]. (1961)

The Lower Tertiary floras of southern England - British Museum (Natural History). Department of Palaeontology. [Plants]. (1962)

The Lower Tertiary floras of southern England - British Museum (Natural History). Department of Palaeontology. [Plants]. (1964)

The Macrolepidoptera of the world : a systematic account of all the known Macrolepidoptera - Seitz, Adalbert, 1860 -1938 (Fritz Lehmann Verlag, 1925)

Madagascar: an environmental profile (1987)

Madagascar: profil de l'environnement (1990)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2008)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2010)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2011)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2013)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2014)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2015)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2016)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2017)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1930)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1937)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1957)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2004)

The Magazine of horticulture, botany, and all useful discoveries and improvements in rural affairs (Hovey and Co, 1839)

Malacologia - Institute of Malacology. (Institute of Malacology], 2007)

Malay poisons and charm cures - Gimlette, John D. (John Desmond), 1867 -1934 (J. & A. Churchill, 1923)

Malaya botanical exploration - Botanic Gardens (Singapore) (1930)

Malayan flora cytological investigation - Botanic Gardens (Singapore) (1934)

Malesia; raccolta di osservazioni botaniche intorno alle piante dell'arcipelago Indo-Malese e Papuano pubblicata da Odoardo Beccari, destinata principalmente a descrivere ed illustrare le piante da esso raccolte in quelle regioni durante i viaggi eseguiti dall'anno 1865 all'anno 1878 ... - Beccari, Odoardo, 1843 -1920 (Tip. del R. Instituto sordo-muti, 1884)

Malimbus : journal of the West African Ornithological Society - West African Ornithological Society. (Ahmadu Bello University Press, 1993)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1903)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1906)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1912)

Mammalian diversity and Matses ethnomammalogy in Amazonian Peru. Part 2, Xenarthra, Carnivora, Perissodactyla, Artiodactyla, and Sirenia - Voss, Robert S. (American Museum of Natural History, 2017)

The mammals of the Caucasus; a history of the evolution of the fauna. (Mlekopitayushchie Kavkaza; istoriya formirovaniya fauny) - Vereshchagin, N. K. (Israel Program for Scientific Translations [available from the U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.], 1967)

Mammals of the Rio Juruá and the evolutionary and ecological diversification of Amazonia - Silva, Maria Nazareth F. da (American Museum of Natural History, 2000)

A manual and dictionary of the flowering plants and ferns - Willis, J. C. (John Christopher), 1868 -1958 (University Press, 1904)

A manual and dictionary of the flowering plants and ferns - Willis, J. C. (John Christopher), 1868 -1958 (University Press, 1908)

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 flora of Madeira and the adjacent islands of Porto Santo and the Desertas - Lowe, Richard Thomas, 1802 -1874 (John Van Voorst, 1868)

A manual of botany - Green, J. Reynolds (Joseph Reynolds), 1848 -1914 (J. & A. Churchill, 1895)

A manual of botany, anatomical and physiological : for the use of students - Royal College of Physicians of Edinburgh. (W. Blackwood, 1874)

A manual of dangerous insects likely to be introduced in the United States through importations - United States. Bureau of Entomology. (Govt. print. off, 1917)

A manual of elementary materia medica - Wills, George S. V. (Simpkin, Marshall, Hamilton, Kent & Co, 1893)

Manual of geology: theoretical and practical - Seeley, H. G. (Harry Govier), 1839 -1909 (C. Griffin and company, 1885)

A manual of organic materia medica and pharmacognosy; an introduction to the study of the vegetable kingdom and the vegetable and animal drugs (with syllabus of inorganic remedial agents) comprising the botanical and physical characteristics, source, constituents, pharmacopoeial preparations, insects injurious to drugs, and pharmacal botany - Sayre, Lucius Elmer. (Blakiston, 1917)

A manual of poisonous plants : chiefly of eastern North America : with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (Torch Press, 1911)

A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (Torch Press, 1910)

A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1910)

A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)

A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)

A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch press, 1911)