Lehrbuch der Paläozoologie - Stromer von Reichenbach, Ernst, Freiherr, 1871 -1952 (B.G. Teubner, 1912)

Lehrbuch der vergleichenden mikroskopischen Anatomie der Wirbeltiere - Oppel, Albert, 1863 -1915 (Fischer, 1896)

Lehrbuch der vergleichenden mikroskopischen Anatomie der Wirbeltiere - Royal College of Physicians of Edinburgh. (G. Fischer, 1914)

Lehrbuch der Vergleichenden Mikroskopischen Anatomie der Wirbeltiere - Franz, Victor, 1883 -1950 (verlag von Gustav Fischer, 1913)

Lehrbuch der Zoologie für Studierende und Lehrer - Boas, J. E. V. (Johan Erik Vesti), 1855 -1935 (G. Fischer, 1890)

Lehrbuch der zoologie in populärer darstellung : nach methodischen grundsätzen für gehobene lehranstalten, sowie zum selbstunterrichte - Baenitz, Carl, 1839 - (Adolph Stubenrauch, 1876)

Lehrbuch der Zoologie - Hertwig, Richard Karl Wilhelm Theodor von Sir Richard Karl Wilhelm Theodor von Hertwig 1850 -1937 (G. Fischer, 1892)

Lehrbuch der Zoologie - Hertwig, Richard Karl Wilhelm Theodor von Sir Richard Karl Wilhelm Theodor von Hertwig 1850 -1937 (G. Fischer, 1910)

Le Léman : monographie limnologique - Forel, F. A. (François Alphonse), 1841 -1912 (F. Rouge, 1904)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1873)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1897)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1899)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1919)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1920)

The Lepidopterist - Boston Entomological Club. (Boston Entomological Club, 1917)

The Lepidopterists' news : the monthly newsletter of the Lepidopterists' Society - Lepidopterists' Society (Lepidopterists' Society, 1952)

The lesson of evolution - Hutton, Frederick Wollaston, 1836 -1905 (Printed for private circulation, 1907)

Libro en honor de D.S. Ramón y Cjal; trabajos originales de sus admiradores y discípulos extranjeros y nacionales - Junta para el Homenaje à Cajal ([Jiménez y Molina, impresores], 1922)

Lichenes Daniae eller Danmarks Laver - Rostrup, E. (Emil), 1831 -1907 (G.E.C. Gads, 1869)

Lichtenstein's Catalogus rerum naturalium rarissimarum - Godman, Frederick Du Cane, 1834 -1919 ([Printed by Taylor and Francis], 1882)

Life in its lower, intermediate, and higher forms : or, manifestations of the divine wisdom in the natural history of animals - Gosse, Philip Henry, 1810 -1888 (James Nisbet, 1857)

Life in its lower, intermediate, and higher forms, or, Manifestations of the Divine Wisdom in the natural history of animals - Gosse, Philip Henry, 1810 -1888 (Robert Carter & Bros, 1857)

Life in its lower, intermediate, and higher forms; or, Manifestations of the divine wisdom in the natural history of animals - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1878)

Life in its lower, intermediate, and higher forms; or, Manifestations of the divine wisdom in the natural history of animals - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1857)

Life in its lower, intermediate, and higher forms; or, Manifestations of the divine wisdom in the natural history of animals - Gosse, Philip Henry, 1810 -1888 (R. Carter, 1860)

Life, its nature and origin - Alexander, Jerome, 1876 - (Reinhold Pub. Corp, 1948)

The life of animals; the mammals - Ingersoll, Ernest, 1852 -1946 (The Macmillan Company, 1906)

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

Life of Sir John Lubbock, Lord Avebury - Hutchinson, Horace G. (Horace Gordon), 1859 -1932 (Macmillan, 1914)

The life of the Pleistocene or glacial period, as recorded in the deposits laid down by the greatice sheets - Baker, Frank Collins, 1867 -1942 (Pub. by the University of Illinois under the auspices of the Graduate School, 1920)

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 science based on high school biology - Stone, George K., (The Macmillan company, 1941)

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)

The lipids, their chemistry and biochemistry - Deuel, Harry James, 1897 -1956 (Interscience Publishers, 1955)

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

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1988)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1990)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1989)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1991)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 2000)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 2007)

Living organisms : an account of their origin & evolution - Goodrich, Edwin S. (Edwin Stephen), 1868 -1946 (Clarendon Press, 1924)

Living things - Bain, Thomas D. (Holt, Rinehart and Winston, 1966)

London Naturalist - London Natural History Society. (London Natural History Society, 1924)

London Naturalist - London Natural History Society. (London Natural History Society, 1967)

London Naturalist - London Natural History Society. (London Natural History Society, 1973)

London Naturalist - London Natural History Society. (London Natural History Society, 1987)

London Naturalist - London Natural History Society. (London Natural History Society, 2000)

London Naturalist - London Natural History Society. (London Natural History Society, 2001)

London Naturalist - London Natural History Society. (London Natural History Society, 2014)

Long Island Botanical Society newsletter - Long Island Botanical Society. (Long Island Botanical Society, 1997)

Lotos - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (Verlag des Deutschen Naturwissenschaftlich-Medizinischen Vereines für Böhmen "Lotos", 1907)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1851)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (Hodder and Stoughton, 1901)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (J. Pott, 1894)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (J. Pott & co, 1908)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (J. Pott, 1901)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (Hodder and Stoughton, 1910)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (J. Pott & Co, 1904)

The Lowell lectures on the ascent of man - Drummond, Henry, 1851 -1897 (J. Pott, 1899)

Ludwig Darmstaedters Handbuch zur Geschichte der Naturwissenschaften und der Technik. In chronologischer Darstellung. 2., umgearb. und verm. Aufl. Unter Mitwirkung von Professor Dr. R. du Bois-Reymond und Oberst z.d.C. Schaefer, hrsg. von Professor Dr. L. Darmstaedter - Du Bois-Reymond, R. (René), 1863 -1938 (J. Springer, 1908)

Ludwig Darmstaedters Handbuch zur Geschichte der Naturwissenschaften und der Technik. In chronologischer Darstellung. 2., umgearb. und verm. Aufl. Unter Mitwirkung von R. du Bois-Reymond und C. Schaefer, hrsg. von L. Darmstaedter - Du Bois-Reymond, R. (René), 1863 -1938 (J. Springer, 1908)

MAB Biosphere Reserves: Site Descriptions, post compilation 5 (October 1990) - WCMC (UNESCO MAB Programme, 1992)

Madera y bosques - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2011)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1954)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2005)

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

Making sustainability operational : Fourth Mexico/U.S. Symposium = Haciendo operacional a la sostenibilidad : Cuarto Simposio Mexico/EUA - Manzanilla, Hugo. (Rocky Mountain Forest and Range Experiment Station, U.S. Department of Agriculture, 1993)

Malacologia - Institute of Malacology. (Institute of Malacology], 1986)

Malacologia - Institute of Malacology. (Institute of Malacology], 1996)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1889)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1894)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1921)

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)

Mammal study - Nihon Honyurui Gakkai (Mammalogical Society of Japan, 1996)

Mammal study - Nihon Honyurui Gakkai (Mammalogical Society of Japan, 1999)

Mammalia. Popularly described by typical species. With numerous anecdotes - Blyth, Edward, 1810 -1873 (F. Warne and Co, 1870)

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

Mammalia. Their various orders and habits popularly illustrated by typical species - Blyth, Edward, 1810 -1873 (D. Appleton, 1870)

Mammalian anatomy, with special reference to the cat - Davison, Alvin, 1868 -1915 (P. Blakiston's son & co, 1903)

Mammalian anatomy : with special reference to the cat - Davison, Alvin, 1868 -1915 (P. Blakiston, 1910)

Mammalian anatomy : with special reference to the cat - Davison, Alvin, 1868 -1915 (P. Blakiston's Son & Co, 1923)

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

The mammals of Illinois and Wisconsin - Cory, Charles B. (Charles Barney), 1857 -1921 (1912)

Mammals of the Pacific world - Tate, G. H. H. (George Henry Hamilton), 1894 -1953 (The Macmillan Company, 1945)

Man and his future; a Ciba Foundation volume - Ciba Foundation. (Little, Brown, 1963)

Man and the biological world - Rogers, J. Speed (James Speed), 1892 -1955 (McGraw-Hill, 1952)