Magasin de zoologie. - Guérin-Méneville, F.-É. (Félix-Édouard), 1799 -1874 (Lequien fils,, 1832)

Magazin der Entomologie - Ahrens, August, 1779 -1841 (Joh. Chr. Hendel, 1815)

Magazin der Entomologie - Ahrens, August, 1779 -1841 (Joh. Chr. Hendel, 1818)

Magazin für Insektenkunde - Illiger, Johann Karl Wilhelm, 1775 -1813 (Karl Reichard, 1806)

Magazin für Insektenkunde - Illiger, Johann Karl Wilhelm, 1775 -1813 (Karl Reichard, 1807)

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, 1829)

The Malay archipelago : the land of the Orang-Utan, and the bird of paradise : a narrative of travel, with studies of man and nature - Wallace, Alfred Russel, 1823 -1913 (Macmillan and Co, 1869)

Malimbus : journal of the West African Ornithological Society - West African Ornithological Society. (Ahmadu Bello University Press, 1979)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Publishing Company, 1897)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock publishing company, inc, 1938)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Pub. Co, 1897)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock, 1923)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Publishing Company, 1904)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Publishing Company, 1916)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (The Comstock Pub. Co., 1920, 1920)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Pub. Co, 1895)

A manual for the study of insects - Comstock, John Henry, 1849 -1931 (Comstock Pub. Co, 1930)

Manual of entomology : with special reference to economic entomology - Maxwell-Lefroy, H. (Harold), 1877 -1925 (Longmans, Green & Co, 1923)

Manual of North American Diptera - Williston, Samuel W. (Samuel Wendell), 1851 -1918 (J. T. Hathaway, 1908)

Manual of North American Diptera - Williston, Samuel W. (Samuel Wendell), 1851 -1918 (J.T. Hathaway, 1908)

Manual of the apiary - Cook, Albert John, 1842 -1916 (T. G. Newman, 1880)

Manual of the apiary - Cook, Albert John, 1842 -1916 (Ills., T. G. Newman & son, 1879)

Manual of the apiary - Cook, Albert John, 1842 -1916 (Ills., T. G. Newman & son, 1878)

Manual of the apiary - Cook, Albert John, 1842 -1916 (T. G. Newman, 1879)

Manual of the families and genera of North American Diptera - Williston, Samuel W. (Samuel Wendell), 1851 -1918 (J.T. Hathaway, 1896)

Manual of the families and genera of North American diptera - Williston, Samuel W. (Samuel Wendell), 1851 -1918 (Hathaway, 1896)

Manuel de la faune de Belgique - Lameere, Auguste, 1864 -1942 (Lamertin, 1895)

Manuel de la faune de Belgique - Lameere, Auguste, 1864 -1942 (H. Lamertin, 1907)

Marvels of insect life ; a popular account of structure and habit - Step, Edward, 1855 -1931 (R. M. McBride, 1916)

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

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, 2016)

Maryland entomologist - Maryland Entomological Society. (Maryland Entomological Society, 2017)

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

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

The mason-bees - Fabre, Jean-Henri, 1823 -1915 (Dodd, Mead and Company, 1914)

The mason-bees - Fabre, Jean-Henri, 1823 -1915 (Dodd, Mead and Company, 1925)

The mason-wasps - Fabre, Jean-Henri, 1823 -1915 (Dodd, Mead and company, 1919)

The mason-wasps - Fabre, Jean-Henri, 1823 -1915 (McClelland & Stewart, 1919)

The mason-wasps - Fabre, Jean-Henri, 1823 -1915 (Dodd, Mead and Company, 1919)

The mason-wasps. Translated by Alexander Teixeira de Mattos - Fabre, Jean-Henri, 1823 -1915 (Dodd, Mead, 1919)

Mature larvae and nesting biologies of bees currently assigned to the Osmiini (Apoidea, Megachilidae) - Praz, Christophe J. (American Museum of Natural History, 2016)

Mature larvae of euglossine bees : a comparative study (Apoidea, Apidae, Euglossini) - Rozen, Jerome G. Jr. (Jerome George), 1928 - (American Museum of Natural History, 2016)

Mazedonien : erlebnisse und beobachtungen eines naturforschers im gefolge des deutschen heeres - Doflein, Franz, 1873 -1924 (Gustav Fischer, 1921)

Mémoires de la Société impériale des sciences naturelles de Cherbourg - Société Imperiale des Sciences Naturelles de Cherbourg. (J.B. Baillière et fils, 1855)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1898)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1899)

Métamorphoses mœurs et instincts des insectes (insectes, myriapodes, arachnides, crustacés) - Blanchard, Emile, 1819 -1900 (G. Baillière, 1868)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica (Societas, 1888)

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], 1883)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1888)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1875)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1893)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1908)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1915)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1916)

Meehan's monthly : a magazine of horticulture, botany, and kindred subjects (T. Meehan & Sons, 1891)

Meehans' monthly : a magazine of horticulture, botany and kindred subjects (Thomas Meehan & Sons, 1902)

Megachile glaesaria, the first megachilid bee fossil from amber (Hymenoptera, Megachilidae) - Engel, Michael S. (American Museum of Natural History, 1999)

Mélanges biologiques tirés du Bulletin de l'Académie impériale des sciences de St. Pétersbourg - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Eggers et comp, 1878)

The Australian Museum Memoir (Australian Museum, 1896)

Mémoires - Société entomologique de Belgique. (The Society, 1906)

Mémoires - Société entomologique de Belgique. (The Society, 1913)

Mémoires couronnés et autres mémoires publiés par l'Académie royale des sciences, des lettres et des beaux-arts de Belgique - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (F. Hayez, 1889)

Memoires de l'Academie des Sciences, Agriculture, Arts et Belles-Lettres (Aix) - Académie des sciences, agriculture, arts & belles-lettres dAix (1844)

Mémoires de l'Academie (Royale) des Sciences, Belles-Lettres et Arts de Lyon - Académie des sciences, belles-lettres et arts de Lyon. (Aadémie (Royale) des Sciences, Belles-Lettres et Art de Lyon, 1860)

Memoires de la Société (Royale) des sciences, de l'agriculture et des arts à Lille - Société des sciences de l'agriculture et des arts de Lille (Société (Royale) des sciences, de l'agriculture et des arts à Lille, 1852)

Mémoires de la Société royale des sciences de Liège - Société royale des sciences de Liège. (La Société, 1853)

Mémoires pour servir à l'histoire naturelle des abeilles solitaires qui composent le genre Halicte - Walckenaer, C. A. (Charles Athanase), 1771 -1852 (Imprimerie de Firmin Didot, 1817)

Mémoires presentés a L'Institut des Sciences, Lettres et Arts, par divers savants èt lus dans ses assemblées : Sciences, Mathématiques et Physiques - Académie royale des sciences (France) (1841)

Memoirs and proceedings of the Manchester Literary & Philosophical Society - Manchester Literary; Philosophical Society. (The Society, 1896)

Memoirs and proceedings of the Manchester Literary & Philosophical Society - Manchester Literary; Philosophical Society. (The Society, 1898)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 1916)

Memoirs of the American Entomological Society - American Entomological Society. (American Entomological Society, 1928)