Lectures and essays - Huxley, Thomas Henry, 1825 -1895 (Cassell, 1908)

Lectures in biological science, presented by Norman G. Anderson [and others] - Anderson, Norman G. (Norman Gulack), 1919 -2018 (University of Tennessee Press, 1963)

Lehrbuch der entwickelungsgeschichte des menschen - Kollmann, Julius, 1834 -1918 (G. Fischer, 1898)

Lehrbuch der Naturgeschichte - Perleb, Karl Julius, 1794 -1845 (Friedrich Wagner, 1831)

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

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

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 (R. Carter, 1860)

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, 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, 1989)

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

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)

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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 (Hodder and Stoughton, 1901)

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, 1899)

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, 1901)

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

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)