Manual of conchology, structural and systematic : with illustrations of the species. Second series, Pulmonata - Hyatt, Alpheus, 1838 -1902 (Published by the Author, 1927)

Manual of conchology, structural and systematic : with illustrations of the species. Second series, Pulmonata - Hyatt, Alpheus, 1838 -1902 (Published by the Author, 1885)

Manual of elementary zoology - Borradaile, L. A. (Lancelot Alexander), 1872 -1945 (Oxford University Press, 1958)

A manual of elementary zoology - Borradaile, L. A. (Lancelot Alexander), 1872 -1945 (H. Frowde, Hodder & Stoughton, 1920)

Manual of the botany of the northern United States - Gray, Asa, 1810 -1888 ([s.n.], 1856)

Manual of the botany of the northern United States : including Virginia, Kentucky, and all east of the Mississippi - Gray, Asa, 1810 -1888 (Ivison, Phinney, 1863)

A manual of the elements of natural history - Blumenbach, Johann Friedrich, 1752 -1840 (printed for W. Simpkin & R. Marshall, 1825)

A manual of the Mollusca; being a treatise on recent and fossil shells - Woodward, S. P. (Samuel Peckworth), 1821 -1865 (C. Lockwood, 1880)

A manual of the Mollusca : a treatise on recent and fossil shells - Woodward, S. P. (Samuel Peckworth), 1821 -1865 (Virtue & Co, 1868)

A manual of the Mollusca: a treatise on recent and fossil shells - Woodward, S. P. (Samuel Peckworth), 1821 -1865 (Virtue Brothers & Co, 1866)

Manual of the New Zealand mollusca - Suter, Henry 1841 -1918 (J. Mackay, govt. printer, 1913)

Manual of vascular plants of the lower Yangtze Valley, China - Steward, Albert Newton, 1897 - (Oregon State College, 1958)

The marine algae of Denmark; contributions to their natural history. Vol. I, Rhodophyceæ - Kolderup Rosenvinge, L. (Lauritz), 1858 -1939 (Andr. Fred Høst & Søn, 1909)

Martini Vahlii, profess. botan. Haun. membr. societ. lit. plur. Enumeratio plantarum :vel ab aliis, vel, ab ipso observatum, cum earum differentiis specificis, synonymis selectis et descriptionibus succinctis - Vahl, M. (Martin), 1749 -1804 (Impenis auctoris, & prostat apud J.H. Schubothe, 1804)

Materiali per una malacostatica di terra e di acqua dolce dell'Argentinia meridionale - Strobel, Pellegrino, 1821 -1895 (Biblioteca malacologica, 1874)

Materialien zur Fauna der Philippinen. XI, Die Insel Leyte - Möllendorff, Otto Franz von, 1848 -1903 (Druck von Gebr. Knauer, 1893)

Mathematische und naturwissenschaftliche Berichte aus Ungarn - Magyar Tudományos Akadémia. (R. Friedländer & Sohn [etc.], 1909)

Mémoires de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Impr. de l'Universitmpale, 1817)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1888)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1896)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1897)

Mémoires de la Société zoologique de France - Société zoologique de France. (Au Siege de la Société, 1900)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1880)

Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1896)

Medical mycology; fungous diseases of men and other mammals - Dodge, Carroll W. (Carroll William), 1895 -1988 (The C.V. Mosby company, 1935)

Die Melaniaceen (Melanidae) in Abbildungen nach der Natur : mit Beschreibungen - Chemnitz, Johann Hieronymus, 1730 -1800 (Bauer & Raspe (Emil Küster), 1874)

The Australian Museum Memoir (Australian Museum, 1899)

Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. 6e série. Seconde partie, Sciences naturelles - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) ([Académie impériale des sciences de St.-Pétersbourg], 1849)

Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. 7e série - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (L'Académie, 1887)

Mémoires de l'Institut des Sciences et Arts. Sciences math. et phys - Institut de France. (1812)

Mémoires de la Société d'émulation du Doubs - Société d'émulation du Doubs. ([La Société])

Mémoires de la Société d'Histoire Naturelle de Paris - Société d'Histoire Naturelle de Paris (1823)

Memoires de la Société de physique et d'histoire naturelle de Genève - Société de physique et d'histoire naturelle de Genève. (Georg [etc.], 1867)

Memoires de la Société de physique et d'histoire naturelle de Genève - Société de physique et d'histoire naturelle de Genève. (Georg [etc.], 1873)

Mémoires de la Société du muséum d'histoire naturelle de Strasbourg - Société du musée d'histoire naturelle de Strasbourg. (F. G. Levrault, 1835)

Memoirs and proceedings of the Manchester Literary & Philosophical Society - Manchester Literary; Philosophical Society. (The Society, 1917)

Memoirs of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (The Academy, 1848)

Memoirs of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (The Academy, 1849)

Memoirs of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (The Academy, 1857)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1874)

Memoirs of the National Academy of Sciences - National Academy of Sciences (U.S.) (Government Printing Office, 1885)

Memoirs of the National Academy of Sciences - National Academy of Sciences (U.S.) (Government Printing Office, 1896)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1959)

Memoirs of the Philadelphia Society for Promoting Agriculture - Philadelphia Society for Promoting Agriculture. (The Society, 1808)

Memoirs of the San Diego Society of Natural History - San Diego Society of Natural History. (The Society, 1979)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1890)

Memoirs of the Wernerian Natural History Society - Wernerian Natural History Society. ([The Society], 1822)

Memoirs of the Wernerian Natural History Society - Wernerian Natural History Society. ([The Society], 1824)

Memorias - Academia Nacional de Ciencias Antonio Alzate, Mexico

Memorias da Academia Real das Sciencias de Lisboa. Classe de sciencias mathematicas, physicas e naturaes - Academia Real das Sciencias de Lisboa. (A Academia, 1867)

Memorias de Agricultura, premiadas pela Academia Real das Sciencias de Lisboa - Academia Real das Sciencias de Lisboa. (1788)

Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid - Real Academia de Ciencias Exactas Físicas y Naturales de Madrid. (Impr. Aguado, 1893)

Memorias Economicas da Academia Real das Sciencias de Lisboa - Academia Real das Sciencias de Lisboa. (1790)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1899)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1900)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1895)