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

Magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology - Loudon, J. C. (John Claudius), 1783 -1843 (printed for Longman, Rees, Orme, Brown, and Green, 1835)

Malacologia - Institute of Malacology. (Institute of Malacology], 2013)

The mammals of the Llano Estacado - Choate, Larry L. (Museum of Texas Tech, 1997)

Mammals of Zacatecas - Matson, John O. (Texas Tech University Press, 1986)

Management of amphibians, reptiles, and small mammals in North America : proceedings of the symposium, July 19-21, 1988, Flagstaff, Arizona - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1988)

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)

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A manual of botany: including the structure, classification, properties, uses, and functions of plants - Bentley, Robert, 1821 -1893 (John Churchill and Sons, 1870)

A manual of botany including the structure, classification, properties, uses, and functions of plants - Bentley, Robert, 1821 -1893 (J & A. Churchill, 1887)

A manual of botany: including the structure, functions, classification, properties and uses of plants - Bentley, Robert, 1821 -1893 (John Churchill, 1861)

Manual of British botany, containing the flowering plants and ferns. Arranged according to the natural orders - Babington, Charles Cardale, 1808 -1895 (J. Van Voorst, 1851)

Manual of conchology, structural and systematic : with illustrations of the species - Tryon, George W., (George Washington), 1838 -1888 (Published by the Author, Academy of Natural Sciences, 1881)

Manual of the botany (Phaenogamia and Pteridophyta) of the Rocky mountain region, from New Mexico to the British boundary - Coulter, John Merle, 1851 -1928 (Ivison, Blakeman, Taylor, and company, 1885)

Manual of the botany (phaenogamia and pteridophyta) of the Rocky mountain region : from New Mexico to the British boundary - Coulter, John Merle, 1851 -1928 (American Book Co, 1885)

Manual of the botany (Phænogamia and Pteridophyta) of the Rocky Mountain region : from New Mexico to the British boundary - Coulter, John Merle, 1851 -1928 (Ivison, Blakeman, Taylor, and company, 1885)

Manual of the botany (Phænogamia and Pteridophyta) of the Rocky mountain region, from New Mexico to the British boundary - Coulter, John Merle, 1851 -1928 (Ivison, Blakeman, Taylor, and Company, 1885)

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Manuel complet du jardinier, maraicher, pépiniériste, botaniste, fleuriste et paysagiste - Noisette, Louis, 1772 -1849 (Rousselon, 1835)

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Medicinal uses of plants by Indian tribes of Nevada - Archer, W. Andrew (William Andrew), 1894 -1973 (Plant Industry Station, 1957)

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Memoir of a tour to northern Mexico :connected with Col. Doniphan's expedition, in 1846 and 1847 - Wislizenus, F. A. (Frederick Adolph), 1810 -1889 (Tippin & Streeper, printers, 1848)

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Mémoires du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (G. Dufour, 1825)

Mémoires du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (G. Dufour, 1832)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1952)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1961)

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Mexico, June 18, 1899 - Nelson, Edward William, 1855 -1934 (1899)

Mexico, November 18, 1895 - August 14, 1896 - Nelson, Edward William, 1855 -1934 (1895)

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Miscellaneous notes and comments on toads, lizards, and snakes from Mexico - Conant, Roger, 1909 -2003 (American Museum of Natural History, 1965)

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Monatsschrift für Kakteenkunde (J. Neumann, 1899)

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A monograph on the fossil Lepadidæ, or, Pedunculated Cirripedes of Great Britain - Darwin, Charles, 1809 -1882 (Printed for the Palæontographical Society, 1851)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1811)

Monthly Magazine or British Register (of Politics, Literature and the Belles Lettres) (1832)

Muhlenbergia - Heller, Amos Arthur, 1867 -1944 (1905)

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Muhlenbergia - Heller, Amos Arthur, 1867 -1944 (1913)

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Mycotaxon (Mycotaxon, 2012)

Mycotaxon (Mycotaxon, 2016)

Mycotaxon (Mycotaxon, 2019)

Mycotaxon (Mycotaxon, 2020)

Myrmecicultoridae, a new family of myrmecophilic spiders from the Chihuahuan Desert (Araneae, Entelegynae) - Cai, Liangwan. (American Museum of Natural History, 2019)

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Native woody plants of the United States : their erosion-control and wildlife values - Mulford, Furman Lloyd, 1869 - (U.S. Dept. of Agriculture, 1938)

Native woody plants of the United States, their erosion-control and wildlife values - United States. (U. S. Govt. print. off, 1938)

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

A natural history of Nevis, and the rest of the English Leeward Charibee islands in America : with many other observations on nature and art, particularly, an introduction to the art of decyphering in eleven letters from the Revd. Mr. Smith, sometime Rector of St. John's at Nevis, and now Rector of St. Mary's in Bedford, to the Revd. Mr. Mason, B.D. Woodwardian Professor, and Fellow of Trinity-College, in Cambridge - Birt, Samuel, -1755 (Printed by J. Bentham ... and sold by W. Thurlbourn in Cambridge, S. Birt ..., C. Bathurst ..., and J. Beecroft ..., London, 1745)

The natural history of plants - Baillon, H. (Henri), 1827 -1895 (L. Reeve & co, 1871)

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A natural history of the nests and eggs of British birds - Morris, F. O. (Francis Orpen), 1810 -1893 (Groombridge, 1853)

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The naturalist in California - Cooper, J. G. (James Graham), 1830 -1902 (Peabody Academy of Science, 1869)

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Nature and science on the Pacific coast : a guide-book for scientific travelers in the West - American Association for the Advancement of Science. Pacific Coast Committee. (P. Elder, 1915)

Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1887)