Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1883)

Lethaea geognostica oder Abbildungen und Beschreibungen der für die Gebirgs-Formationen bezeichnendsten Versteinerungen - Bronn, H. G. (Heinrich Georg), 1800 -1862 (1838)

Lethaea rossica, ou, Paléontologie de la Russie - Eichwald, Carl Eduard von, 1795 -1876 (E. Schweizerbart, 1852)

Letters and recollections of Alexander Agassiz - Agassiz, Alexander, 1835 -1910 (Constable, 1913)

Letters and recollections of Alexander Agassiz : with a sketch of his life and work - Agassiz, Alexander, 1835 -1910 (Houghton Mifflin, 1913)

Liberia - Stapf, O. (Otto) 1857 -1933 (Hutchinson, 1906)

Libri de piscibus marinis : in quibus veræ piscium effigies expressæ sunt : quæ in tota piscium historia contineantur, indicat elenchus pagina nona et decima : postremo indices necessarij - Rondelet, Guillaume, 1507 -1566 (Apud Matthiam Bonhomme, 1554)

Life, adventures and travels in California - Farnham, Thomas Jefferson, 1804 -1848 (Nafis & Cornish, 1849)

The life and writings of Rafinesque : prepared for the Filson Club and read at its meeting, Monday, April 2, 1894 - Call, Richard Ellsworth, 1856 -1917 (J.P. Morton and Co, 1895)

Life-histories of northern animals : an account of the mammals of Manitoba - Seton, Ernest Thompson, 1860 -1946 (Scribner, 1909)

Life-histories of northern animals an account of the mammals of Manitoba - Seton, Ernest Thompson, 1860 -1946 (C. Scribner's Sons, 1909)

Life of a Scotch naturalist, Thomas Edward, associate of the Linnean Society - Smiles, Samuel, 1812 -1904 (John Murray, 1877)

The life of mammals - Ingersoll, Ernest, 1852 -1946 (Macmillan, 1917)

Life of a Scotch naturalist, Thomas Edward, associate of the Linnean Society - Smiles, Samuel, 1812 -1904 (J. Murray, 1877)

The life of vertebrates - Young, J. Z. (John Zachary), 1907 -1997 (Oxford University Press, 1962)

Life, outlines of general bioloy - Thomson, J. Arthur (John Arthur), 1861 -1933 (Harper, 1900)

Life zones and crop zones of New Mexico - Bailey, Vernon, 1864 -1942 (G.P.O, 1913)

The Lincolnshire naturalist : transactions of the Lincolnshire Naturalists' Union - Lincolnshire Naturalists' Union. (Lincolnshire Naturalists' Union, 2005)

A Linguatulid from the alligator - Hill, Howard Rice. (1916)

List of American varieties of vegetables for the years 1901 and 1902 - Tracy, William Woodbridge, Jr. (Govt. print. off, 1903)

List of North American land mammals in the United States National Museum, 1911 - Miller, Gerrit S. Jr. (Gerrit Smith), 1869 -1956 (Govt. print. off, 1912)

List of the animals in the gardens of the Zoological Society : with notices respecting them, and a plan of the gardens, showing the buildings and enclosures in which the animals are kept : June 1833 - Zoological Society of London. (Printed by Richard Taylor, 1833)

A list of the land and sea mammals of North America north of Mexico. Supplement to the synopsis - Elliot, Daniel Giraud, 1835 -1915 (1901)

List of the osteological specimens in the collection of the British Museum - British Museum (Natural History) (1847)

List of the specimens of lepidopterous insects in the collection of the British Museum - Gray, John Edward 1800 -1875 (Printed by order of the Trustees, 1856)

List of the specimens of Mammalia in the collection of the British museum - Gray, John Edward 1800 -1875 (The Trustees, 1843)

List of the vertebrated animals living in the gardens of the Zoological Society of London - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1862)

List of the vertebrated animals now or lately living in the gardens of the Zoological society of London - Sclater, Philip Lutley, 1829 -1913 (The Society, 1877)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1879)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Zoological Society of London. (Printed for the Society, and sold ... Longmans, Green, Reader, and Dyer, 1883)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society by Longmans, Green, Reader, and Dyer, 1883)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Zoological Society of London. (printed for the Society, 1883)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1896)

List of vertebrated animals living in the gardens of the Zoological Society of London - London Zoo (London, England) (The Society, 1865)

List of vertebrated animals living in the gardens of the Zoological Society of London - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1866)

The living world: a complete natural history of the world's creatures, fishes, reptiles, insects, birds and mammals - Buel, James W. (James William), 1849 -1920 (Holloway & co, 1889)

The living world : containing descriptions of the several races of men, and all species of animals, birds, fishes, insects, etc., etc. : with numerous anecdotes, illustrative of their instincts, reasoning powers and domestic habits - Samuels, Edward A. (Edward Augustus), 1836 -1908 (Samuel Walker & Co, 1870)

Livingstone's Africa : perilous adventures and extensive discoveries in the interior of Africa : from the personal narrative of David Livingstone ... together with the remarkable success and important results of the Herald-Stanley expedition - Livingstone, David, 1813 -1873 (Hubbard Bros, 1872)

Locupletissimi rerum naturalium thesauri accurata descriptio, et iconibus artificiosissimis expressio, per universam physices historiam : opus, cui, in hoc rerum genere, nullum par exstitit - Boerhaave, Herman, 1668 -1738 (Apud J. Wetstenium, & Gul. Smith, & Janssonio-Waesbergios, 1735)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1835)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1837)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1838)

London Naturalist - London Natural History Society. (London Natural History Society, 1938)

London Naturalist - London Natural History Society. (London Natural History Society, 2012)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1859)

Loudon's Natural History. Popular descriptions, tales and anecdotes of more than five hundred animals - Loudon, J. C. (John Claudius), 1783 -1843 (G. Bell and sons, 1889)

M. Th. Brünnichii Zoologiae fundamenta praelectionibus academicis accommodata = Grunde i dyrelaeren - Brünnich, M. Thr. (Morten Thrane), 1737 -1827 (Apud Frider. Christ. Pelt, 1772)

Macrolepidoptera and their parasites reared from field collections in the northeastern part of the United States - Schaffner, J. V. (John Valentine), 1888 - (U.S. Dept. of Agriculture, 1934)

Madras Journal of Literature and Science - Madras Literary Society. (Madras Literary Society, 1838)

Madras Journal of Literature and Science - Madras Literary Society. (Madras Literary Society, 1839)

Madras Journal of Literature and Science - Madras Literary Society. (Madras Literary Society, 1840)

Magasin Encyclopédique : ou journal des sciences, des lettres et des arts (1795)

Magazin für das Neueste aus der Physik und Naturgeschichte - Lichtenberg, Georg Christoph, 1742 -1799 (Carl Wilhelm Ettinger, 1781)

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, 1837)

The Magazine of natural history / conducted by Edward Charlesworth - Charlesworth, Edward. (s.n.], 1838)

The Magazine of natural history / conducted by Edward Charlesworth - Charlesworth, Edward. (s.n.], 1840)

Magazine of zoology and botany - Westwood, J. O. (John Obadiah), 1805 -1893 (1837)

A magyar halászat könyve. A Kir. magyar természettudományi társulat megbizásából - Herman, Ottó, 1835 -1914 (Kiadja A.K.M. Termeszettudományi társulat, 1887)

Malacologia - Institute of Malacology. (Institute of Malacology], 1966)

Malakozoologische Blätter - Menke, Karl Theodor, 1791 -1861 (T. Fischer, 1869)

Die Mallophagen mit besonderer Berücksichtigung der von Dr. Meyer gesammelten Arten - Taschenberg, Otto, 1854 -1922 (E. Blochmann, 1882)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1907)

Os mamíferos do Brasil - Goeldi, Emílio Augusto, 1859 -1917 (Livraria classica de Alves & C, 1893)

Mamíferos fósiles de la República Argentina. Parte III, Homalodontes - Ameghino, Florentino, 1853 -1911 (Taller de Impresiones Oficiales, 1918)

Mammal species of the world : additional data on insular mammals - Alcover, Josep Antoni. (American Museum of Natural History, 1998)

Mammalia, Aves, Reptilia, Amphibia, Pisces - Matschie, Paul, 1861 -1926 (G. Fischer, 1909)

Mammalia - Blanford, W. T. (William Thomas), 1832 -1905 (Taylor and Francis, 1888)

Mammalia - Blanford, W. T. (William Thomas), 1832 -1905 (Taylor and Francis, 1891)

The mammalia of Canada - Glenny, George, 1793 -1874 (s.n.], 1888)

Mammalia : their various forms and habits, popularly illustrated by typical species - Figuier, Louis, 1819 -1894 (Cassell, Petter, Galpin & Co, 1883)

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 mammalian fauna of the Edinburgh district : with records of occurrences of the rarer species throughout the south-east of Scotland generally - Evans, William, writer on mammals. (M'Farlane & Erskine, 1892)

The mammalian fauna of the Edinburgh district : with records of occurrences of the rarer species throughout the south-east of Scotland generally - Evans, William (M'Farlane & Erskine, 1892)

Mammalogie, ou, Description des espèces de mammifères - Desmarest, A.-G. (Anselme-Gaëtan), 1784 -1838 (Chez Mme. Veuve Agasse, imprimeur-libraire, 1820)

Mammalogie ou description des espèces des Mammifères - Desmarest, A.-G. (Anselme-Gaëtan), 1784 -1838 (Veuve Agasse, 1820)

The mammals and life zones of Oregon - Bailey, Vernon, 1864 -1942 ([U.S. Govt. Print. Off.], 1936)

Mammals from western Venezuela and eastern Colombia - Osgood, Wilfred Hudson, 1875 -1947 (1912)

The mammals of Africa: country lists. Draft document - Thornback, Jane. (IUCN Conservation Monitoring Centre, UNEP, WWF, 1983)

The mammals of Alberta - Soper, J. Dewey (Joseph Dewey), 1893 - (Hamly Press, 1964)

Mammals of America - Anthony, H. E. (Harold Elmer), 1890 -1970 (The University Society, inc, 1917)

The mammals of Bitterroot Valley, Montana, in their relation to spotted fever - Henshaw, Henry W. (Henry Wetherbee), 1850 -1930 (Govt. Print. Off, 1911)

The mammals of Chile - Osgood, Wilfred Hudson, 1875 -1947 (Field Museum of Natural History, 1943)