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

Lehrbuch der Zoologie - Hertwig, Richard Karl Wilhelm Theodor von Sir Richard Karl Wilhelm Theodor von Hertwig 1850 -1937 (G. Fischer, 1893)

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 - 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, 1843)

Leitfaden für die Försterprüfungen; ein Handbuch für den Unterricht und Selbstunterricht unter Berücksichtigung der preussischen Verhältnisse sowie für den praktischen Forstwirt - Westermeier, G. (J. Springer, 1909)

Leitfaden zum Bestimmen der Vögel Mittel-Europas, ihrer Jugendkleider und ihrer Nester, nach leicht und sicher erkennbaren Merkmalen - Dahl, Friedrich, 1856 -1929 (Verlag von Gebrüder Borntraeger, 1912)

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

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

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

Life and letters of Alexander Goodman More, F.R.S.E., F.L.S., M.R.I.A., with selections from his zoological and botanical writings - More, Alexander Goodman, 1830 -1895 (Hodges, Figgis & co. (ltd.), 1898)

The life and letters of Charles Darwin : including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton, 1887)

The life and letters of Charles Darwin : including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton, 1896)

The life and letters of Charles Darwin : including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton and Co, 1898)

The life and letters of Charles Darwin, including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton and Company, 1888)

The life and letters of Charles Darwin : including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton and Co, 1896)

The life and letters of Charles Darwin, including an autobiographical chapter - Darwin, Charles, 1809 -1882 (D. Appleton, 1891)

The life and letters of Charles Darwin, including an autobiographical chapter - Darwin, Charles, 1809 -1882 (John Murray, 1888)

The life and letters of Charles Darwin, including an autobiographical chapter - Darwin, Charles, 1809 -1882 (J. Unray, 1887)

Life and sport on the north shore of the lower St. Lawrence and Gulf, containing chapters on salmon fishing, trapping, the folk-lore of the Montagnais Indians and tales of adventure on the fringe of the Labrador peninsula - Comeau, Napoleon A. (Napoleon Alexander), 1848 -1923 (Daily Telegraph Printing House, 1909)

Life histories of North American birds, from the parrots to the grackles, with special reference to their breeding habits and eggs - Bendire, Charles, 1836 -1897 (Smithsonian Institution, 1895)

Life histories of North American birds : with special reference to their breeding habits and eggs - Bendire, Charles, 1836 -1897 (Smithsonian Institution, 1892)

Life histories of North American birds with special reference to their breeding habits and eggs, with twelve lithographic plates - Bendire, Charles, 1836 -1897 (Govt. print. off, 1892)

Life-histories of the birds of eastern Pennsylvania - Gentry, Thomas G. (Thomas George), 1843 -1905 (Pub. by the author, 1876)

Life of a Scotch naturalist : Thomas Edward, associate of the Linnaean society - Smiles, Samuel, 1812 -1904 (Harper & brothers, 1877)

Life of a Scotch naturalist: Thomas Edward, associate of the Linnaean Society - Smiles, Samuel, 1812 -1904 (Harper & brothers, 1876)

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

Life of Alfred Newton - Wollaston, A. F. R. (Alexander Frederick Richmond), 1875 -1930 (E. P. Dutton, 1921)

Life of Alfred Newton, professor of comparative anatomy, Cambridg university, 1866-1907 - Wollaston, A. F. R. (Alexander Frederick Richmond), 1875 -1930 (J. Murray, 1921)

Life of Alfred Newton, professor of comparative anatomy, Cambridge university, 1866-1907 - Wollaston, A. F. R. (Alexander Frederick Richmond), 1875 -1930 (J. Murray, 1921)

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)

Light science for leisure hours. A series of familiar esays on scientific subjects, natural phenomena, &c., &c - Proctor, Richard A. (Richard Anthony), 1837 -1888 (Appleton, 1871)

Light science for leisure hours : a series of familiar essays on scientific subjects, natural phenomena, &c - Proctor, Richard A. (Richard Anthony), 1837 -1888 (Longmans, Green, and Co, 1886)

Light science for leisure hours, a series of familiar essays on scientific subjects, natural phenomena, etc - Proctor, Richard A. (Richard Anthony), 1837 -1888 (Longmans, 1871)

A List of birds' eggs in the collection of Mr. William Stoate, Wembdon, Bridgewater - Stoate, William. (1880)

A List of British birds - British Ornithologists' Union (British Ornithologists' Union, 1915)

A list of British birds ... - Ogilvie-Grant, W. R. (William Robert), 1863 -1924 (1910)

A List of British birds - British Ornithologists' Union (John Van Voorst, 1883)

A list of British birds belonging to the Humber district : having a special reference to their migrations - Cordeaux, John. (R. H. Porter, 1899)

A list of British birds - British Ornithologists' Union (British ornithologists' union, 1915)

A list of British birds - British Ornithologists' Union (J. van Voorst, 1883)

A list of British birds. The genera arranged according to Sundevall's method. The nomenclature - Wharton, Henry Thornton, 1846 -1895 (J. Van Voorst, 1877)

A list of European birds : including all species found in the western palaearctic region : the nomenclature carefully revised - Dresser, H. E. (Henry Eeles), 1838 -1915 (H.E. Dresser, 1881)

A list of European birds, including all species found in the western palaearctic region - Dresser, H. E. (Henry Eeles), 1838 -1915 (The Author, 1881)

List of New Guinea birds : a systematic and faunal list of the birds of New Guinea and adjacent islands - Mayr, Ernst, 1904 -2005 (American Museum of Natural History, 1941)

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)

List of the birds in the Indian Museum. Pt. 1. Families Corvidae, Paradiseidae, Ptilomorhnchidae and Crateropodidae - Indian Museum. (1901)

A list of the birds known to inhabit the Island of Celebes - Tweeddale, Arthur Hay,‏ ‎ Marquis of, 1824 -1878 (1872)

A list of the birds of Australia : containing the names and synonyms connected with each genus, species, and subspecies of birds found in Australia, at present known to the author - Mathews, Gregory Macalister Gregory Macalister 1876 -1949 (Witherby, 1913)

List of the birds of India - Hume, Allan Octavian, 1829 -1912 (1879)

A list of the birds of Long Island, New York - Braislin, William C. (William Coughlin), 1865 -1948 (E.W. Wheeler, 1907)

A list of the birds of Maine, showing their distribution by counties and their status in each county - Knight, Ora Willis, 1874 -1913 (Kennebec journal print, 1897)

List of the birds of Nelson County - Beckham, Charles Wickliffe. (John D. Woods, 1885)