Lehrbuch der vergleichenden Anatomie der wirbellosen Thiere - Lang, Arnold, 1855 -1914 (G. Fisher, 1900)

Lehrbuch der Zoologie - Claus, Carl, 1835 -1899 (Elwert, 1897)

Lehrbuch der zoologie - Claus, Carl, 1835 -1899 (N. G. Elwert, 1883)

Lehrbuch der zoologie - Claus, Carl, 1835 -1899 (N. G. Elwert, 1891)

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)

Lehrbuch der Zootomie; anatomische Charakteristik der Thierklassen, als Einleitung in das Studium der Zoologie, vergleichenden Anatomie und Physiologie mit Hinweisung auf die Icones zootomicae - Frey, Heinrich, 1822 -1890 (Voss, 1847)

Die Lehre von den Haaren in der gesammten organischen Natur - Eble, Burkard, 1799 -1839 (Heubner, 1831)

Leitfaden für das zoologische Praktikum - Kükenthal, W. G. (Willy Georg), 1861 -1922 (G. Fischer, 1912)

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

Lessons in elementary biology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1893)

Life and death, heredity and evolution in unicellular organisms - Jennings, H. S. (Herbert Spencer), 1868 -1947 (R. G. Badger, 1920)

Life and death, heredity and evolution in unicellular organisms - Jennings, H. S. (Herbert Spencer), 1868 -1947 (Badger, 1920)

Life and death, heredity and evolution in unicellular organisms - Jennings, H. S. (Herbert Spencer), 1868 -1947 (R.G. Badger, 1920)

Life and death, heredity and evolution in unicellular organisms - Jennings, H. S. (Herbert Spencer), 1868 -1947 (Richard G. Badger, 1920)

Life and her children : glimpses of animal life from the amoeba to the insects - Buckley, Arabella B. (Arabella Burton), 1840 -1929 (Edward Stanford, 1885)

Life and her children : glimpses of animal life from the amoeba to the insects - Buckley, Arabella B. (Arabella Burton), 1840 -1929 (E. Stanford, 1882)

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

A limnological study of the Finger Lakes of New York - Birge, E. A. (Edward Asahel), 1851 -1950 (Govt. Print. Off, 1914)

The living plant in leaf, flower, and fruit : a popular book on botany for the general reader - Step, Edward, 1855 -1931 (Hutchinson & Co, 1904)

Luz da liberal, e nobre arte da cavallaria : offerecida ao Senhor D. João, principe do Brazil - Alegre, Manuel, 1768 -1815 (Na Regia Officina Typografica, 1790)

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, 1836)

A manual of the common invertebrate animals, exclusive of insects - Pratt, Henry Sherring, 1859 - (A.C. McClurg & co, 1916)

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

A manual of the Infusoria: including a description of all known flagellate, ciliate, and tentaculiferous Protozoa, British and foreign, and an account of the organization and affinities of the sponges - Saville-Kent, William 1845 -1908 (D. Bogue, 1880)

A manual of the Infusoria : including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign, and an account of the organization and the affinities of the sponges - Saville-Kent, William 1845 -1908 (D. Bogue, 1880)

A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges - Saville-Kent, William 1845 -1908 (David Bogue, 1881)

A manual of the Infusoria : including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign, and an account of the organization and the affinities of the sponges - Saville-Kent, William 1845 -1908 (D. Bogue, 1881)