Methodus foliorum, seu plantae florae Monspeliensis, juxta foliorum ordinem, ad juvandam specierum cognitionem, digestae ... Methode pour connoître les plantes par les feüilles - Boissier de la Croix de Sauvages, François, 1706 -1767 (1751)

Methodus nova muscorum : ad naturae mormam melius instituta et muscologiae recentiorum accommodata - Bridel-Brideri, Samuel Elisée de, 1761 -1828 (Apud A. Ukertum, 1819)

Methodus nova muscorum : ad naturae normam melius instituta et muscologiae recentiorum accommodata - Bridel-Brideri, Samuel Elisée de, 1761 -1828 (J. A. Barthium, 1822)

Methodus plantas horti botanici et agri Marburgensis :a staminum situ describendi - Moench, Conrad, 1744 -1805 (in officina nova libraria academiae, 1794)

Mexicanas plantas nuper a collectoribus expeditionis scientificae allatas :aut longis ab annis in herbario musei parisiensis depositas - Fournier, Eugène, 1834 -1884 (ex Typographeo Reipublicae, 1872)

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

Meyers Konversations-Lexikon : eine Encyklopädie des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (1885)

Meyers Konversations-Lexikon : eine Encyklopädie des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Verlag des Bibliographischen Instituts, 1890)

Michigan bird life, a list of all the bird species known to occur in the state together with an outline of their classification and an account of the life history of each species, wtih special reference to its relation to agriculture - Barrows, Walter Bradford, 1855 -1923 (Michigan Agricultural College, 1912)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1964)

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

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

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

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

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

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, 1994)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1995)

The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Berkeley, M. J. (Miles Joseph), 1803 -1889 (J. Van Voorst, 1875)

The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Griffith, J. W. (John William) (John Van Voorst, 1856)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (J. & A. Churchill, 1875)

The microscope, and its revelations - Carpenter, William Benjamin, 1813 -1885 (Blanchard and Lea, 1856)

The microscope: and its revelations - Carpenter, William Benjamin, 1813 -1885 (Blanchard and Lea, 1856)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (John Churchill, 1856)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (J. & A. Churchill, 1901)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (Blanchard and Lea, 1856)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (J. Churchill, 1857)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (P. Blackiston's Sons and Co, 1901)

The microscope and its revelations - Carpenter, William Benjamin, 1813 -1885 (John Churchill and Sons, 1868)

Le microscope son emploi et ses applications ... - Pelletan, Jules, 1833 -1892 (G. Masson, 1876)

Microscopic objects, animal, vegetable and mineral; with instructions for preparing and viewing them - Pritchard, Andrew, 1804 -1882 (Whittaker, 1847)

The Microscopical news, and northern microscopist (1883)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1880)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1882)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1883)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1884)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1893)

Mikrochemie der Pflanze - Molisch, Hans, 1856 -1937 (G. Fischer, 1921)

Mikrochemie der pflanze - Molisch, Hans, 1856 -1937 (G. Fischer, 1923)

Mikrochemie der Pflanze - Molisch, Hans, 1856 -1937 (G. Fischer, 1913)

Minnesota botanical studies - Geological; Natural History Survey of Minnesota. (Geological and Natural History Survey of Minnesota, 1894)

Minnesota botanical studies - Geological; Natural History Survey of Minnesota. (Geological and Natural History Survey of Minnesota, 1896)

Minnesota botanical studies - Geological; Natural History Survey of Minnesota. (Geological and Natural History Survey of Minnesota, 1903)

Miscellaneous. [Contributions in cryptogamic botany (1846)

Miscellaneous papers on the zoology of Michigan - Andrews, A. W. (W.H. Crawford Co., state printers, 1916)

Miscellaneous papers on the zoology of Michigan - Hankinson, Thomas Leroy, 1876 - (W. H. Crawford Co., state printers, 1916)

Miscellaneous publications - University of Michigan. Museum of Zoology. (The University, 1916)

Mitteilungen aus dem Botanischen Museum der Universität Zürich - Universität Zürich. Botanisches Museum. (Botanisches Museum der Universität Zürich], 1914)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1901)

Mitteilungen der Bayerischen Botanischen Gesellschaft zur Erforschung der Heimischen Flora (E.V.) - Bayerische Botanische Gesellschaft zur Erforschung der Heimischen Flora. (Selbstverlag der Gesellschaft, 1906)

Mitteilungen der Deutschen dendrologischen gesellschaft - Deutsche Dendrologische Gesellschaft. (Thyrow (Kr. Teltow), [etc.], 1909)

Mitteilungen der Münchner Entomologischen Gesellschaft - Münchner Entomologische Gesellschaft. (Münchner Entomologische Gesellschaft, 1979)

Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark - Molisch, Hans, 1856 -1937 (1874)

Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark - Molisch, Hans, 1856 -1937 (1913)

Mitteilungen des Thüringischen Botanischen Vereins n. F - Thüringische Botanische Gesellschaft. (Im Selbstverlag des Vereins, 1914)

Mittheilungen aus dem Gesammtgebiete der Botanik - Luerssen, Christian, 1843 -1916 (1871)

Mittheilungen der Naturforschenden Gesellschaft in Bern - Naturforschende Gesellschaft in Bern. (Naturforschenden Gesellschaft in Bern], 1858)

The mollusca of Somerset; land, freshwater, estuarine and marine - Swanton, Ernest W. (Somersetshire Archaeological and Natural History Society, 1912)

Mollusca terrestria et fluviatilia, edit - Porro, Carlo, 1813 -1848 (excudebat Aloysius de Jacobo Pirola, 1846)

Molluscorum Britanniæ synopsis : A synopsis of the Mollusca of Great Britain - Gray, John Edward, 1800 -1875 (J. van Voorst, 1852)

Mollusques terrestres et fluviatiles de la Côte-d'Or - Drouët, Henri, 1829 -1900 (J.B. Baillière et fils; F. Savy, 1867)

Le Monde des plantes - Académie internationale de géographie botanique. (Impr. Edmond Monnoyer, 1893)

Le Monde des plantes - Académie internationale de géographie botanique. (Impr. Edmond Monnoyer, 1894)

Le Monde des plantes - Académie internationale de géographie botanique. (Impr. Edmond Monnoyer, 1895)

A monograph of the British Desmidiaceæ - West, G. S. (George Stephen), 1876 -1919 (The Ray Society, 1904)

A monograph of the Crag mollusca; or, Descriptions of shells from the middle and upper Tertiaries of the east of England - Wood, Searles V. (Searles Valentine), 1798 -1880 (Palaeontographical Society, 1848)

A monograph of the Crag mollusca; or, Descriptions of shells from the middle and upper Tertiaries of the east of England - Wood, Searles V. (Searles Valentine), 1798 -1880 (Palaeontographical Society, 1850)

A monograph of the Crag Mollusca : with descriptions of shells from the upper Tertiaries of the British Isles - Wood, Searles V. (Searles Valentine), 1798 -1880 (Printed for the Palæontographical society, 1848)

A monograph of the Crag Mollusca; with descriptions of shells from the upper Tertiaries of the British Isles - Wood, Searles V. (Searles Valentine), 1798 -1880 (Printed for the Palaeontographical Society, 1848)

A monograph of the Crag Mollusca; with descriptions of shells from the upper Tertiaries of the British Isles - Wood, Searles V. (Searles Valentine), 1798 -1880 (Printed for the Palaeontographical Society, 1851)

A monograph of the freshwater univalve mollusca of the United States : including notices of species in other parts of North America - Haldeman, Samuel Stehman, 1812 -1880 (E. G. Dorsey, 1842)

A monograph of the freshwater univalve mollusca of the United States, including notices of species in other parts of North America - Haldeman, Samuel Stehman, 1812 -1880 (1842)

A monograph of the Limniades and other freshwater univalve shells of North America - Haldeman, Samuel Stehman, 1812 -1880 (J. Dobson, 1840)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1848)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1850)

Monographie des Leuchtmooses : Schistostega osmundacea Web. et Mohr - Dunk, Kurt von der. (1921)

Montana wild life. Official publication - Montana. Dept. of Fish; Game. (1931)

Monthly microscopical journal: transactions of the Royal Microscopical Society, and record of histological research at home and abroad - Royal Microscopical Society (Great Britain) (R. Hardwicke, 1869)

Die Moose Deutschlands ; Die Lebermoose ; Die bisher bekannten europäischen Characeen - Sydow, P. (Paul), 1851 -1925 (A. Stubenrauch, 1881)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (Fischer, 1922)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1922)

Moss flora of Central America - Crum, Howard, 1922 -2002 (Missouri Botanical Garden, 2010)

The moss flora of New York City and vicinity - Grout, A. J. (Abel Joel), 1867 -1947 (The author, 1915)

Mosses - Britton, Elizabeth G. (Elizabeth Gertrude), 1858 -1934 (Natural Science Committee of the Associate Alumnae of the Normal College, 1900)

Mosses and lichens : a popular guide to the identification and study of our commoner mosses and lichens, their uses, and methods of preserving - Marshall, Nina L. (Doubleday, Page & company, 1907)

Mosses and lichens : a popular guide to the identification and study of our commoner mosses and lichens, their uses, and methods of preserving - Marshall, Nina L. (Doubleday, Page, 1920)

Mosses and lichens; a popular guide to the identification and study of our commoner mosses and lichens, their uses, and methods of preserving - Marshall, Nina L. (Doubleday, Page, 1907)