Lehrbuch der Petrographie - Zirkel, Ferdinand, 1838 -1912 (Engelmann, 1893)

Leitfaden der Biologie der Fische - Haempel, Otto. (F. Enke, 1912)

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)

Leo Lesquereux letters to Asa Gray - Lesquereux, Léo, 1806 -1889 (1850)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1881)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1885)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1892)

The Lepidoptera of the British Islands : a descriptive account of the families, genera, and species indigenous to Great Britain and Ireland, their preparatory states, habits, and localities - Barrett, Charles Golding, 1836 -1904 (L. Reeve, 1907)

The Lepidopterists' news : the monthly newsletter of the Lepidopterists' Society - Lepidopterists' Society (Lepidopterists' Society, 1947)

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

A letter to the President and members of the Chelmsford Agricultural Society, upon the causes of the distressed state of the agricultural classes of the United Kingdom of Great Britain and Ireland - Western, C.C. Baron Western, (Charles Callis), 1767 -1844 (Printed for J. Ridgway, 1835)

Lettere recentemente pubblicate sui pesci fossili veronesi : con annotazioni inedite agli estratti delle medesime - Gazzola, Giovanni Battista (Ramanzini, 1794)

Lettere recentemente pubblicate sui pesci fossili veronesi : con annotazioni inedite agli estratti delle medesime - Agassiz, Louis, 1807 -1873 (Ramanzini, 1794)

Letters of Asa Gray - Gray, Asa, 1810 -1888 (Houghton, Mifflin and company, 1894)

Letters of Asa Gray - Gray, Asa, 1810 -1888 (Houghton, Mifflin, 1894)

Letters of Asa Gray - Gray, Asa, 1810 -1888 (Houghton, Mifflin and company, 1893)

Lexikon der entomologischen Welt, der carcinologischen und arachnologischen : Adressenbuch der lebenden Entomologen und Entomolophilen etc. ; ... von Aristoteles an bis zur Gegenwart - Gistel, Johannes, 1809 - (E. Schweizerbart'sche Verlagshandlung, 1846)

Lexikon der entomologischen welt, der carcinologischen und arachnologischen. Adressenbuch der lebenden entomologen und entomophilen, etc.; der carcinologen und arachnologen sammt ihren schriften, dann der naturforscher-akademien und deren verhandlungen, der zoologischen ephemeriden, bibliographien, biographien und realwörterbücher, der öffentlichen und privat-sammlungen der welt, der schriften über sammlungs- und aufbewahrungsweise der gliederthiere, mit doppelten registern und einer aufzählung aller entomologischen, carcinologischen und arachnologischen schriftsteller von Aristoteles an bis zur gegenwart - Gistel, Johannes, 1809 - (E. Schweizerbart, 1846)

Lexikon der Erfindungen und Entdeckungen auf den Gebieten der Naturwissenschaften und Technik in chronologischer Übersicht mit Personen- und Sachregister - Feldhaus, Franz Maria, 1874 - (C. Winter, 1904)

Libellulinen - Ris, F. (Friedrich), 1867 -1931 (1909)

Libellulinen - Ris, F. (Friedrich), 1867 -1931 (1910)

Libellulinen - Ris, F. (Friedrich), 1867 -1931 (1911)

Lichens - Smith, Annie Lorrain, 1854 - (Univ. Press, 1921)

The life and letters of Hugh Miller - Bayne, Peter, 1830 -1896 (Strahan, 1871)

Life and letters of James David Forbes ... - Adams-Reilly, Anthony, 1836 -1885 (Macmillan, 1873)

Life and letters of Sir Joseph Prestwich ... - Prestwich, Grace Anne, Lady, 1832 -1899 (W. Blackwood and Sons, 1899)

The life, letters and labours of Francis Galton - Pearson, Karl, 1857 -1936 (University press, 1914)

The life of an insect : being a history of the changes of insects from the egg to the perfect being - Society for Promoting Christian Knowledge (Great Britain). General Literature Committee. (Society for Promoting Christian Knowledge, 1851)

The life of Horace Benedict de Saussure, W. Freshfield, with the collaboration of Henry F. Montagnier - Freshfield, Douglas William, 1845 -1934 (E. Arnold, 1920)

The life of an insect ... - Society for Promoting Christian Knowledge (Great Britain). General Literature Committee. (The Society for promoting Christian knowledge, 1851)

The life of Major J. G. Semple Lisle : containing a faithful narrative of his alternate vicissitudes of splendor and misfortune - Semple, James George, 1759 - (Printed for W. Stewart, No. 194, opposite York House, Piccadilly, 1800)

The life of Sir Charles Linnæus, knight of the Swedish order of the polar star, &c. &c. : to which is added, a copious list of his works, and a biographical sketch of the life of his son - White, Benjamin, approximately 1724 -1794 (printed by E. Hodson ; for B. and J. White, 1794)

The life of Sir Charles Linnaeus ... : to which is added, a copious list of his works, and a biographical sketch of the life of his son - Trapp, Joseph. (Printed by E. Hobson ..., for B. and J. White, 1794)

Life on the earth its origin and succession - Phillips, John, 1800 -1874 (Macmillan, 1860)

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

The life, times and scientific labours of the second Marquis of Worcester - Dircks, Henry, 1806 -1873 (Quaritch, 1865)

Les liliacees - Candolle, Augustin Pyramus de, 1778 -1841 (Chez l'auteur, 1808)

Linnaea entomologica : Zeitschrift herausgegeben von dem Entomologischen Vereine in Stettin - Entomologischer Verein in Stettin. (Ernst Siegfried Mittler, 1855)

[List of berries and fruit trees for sale : letter dated 3-6-'16 from Moody Brenneman to the U. S. Department of Agriculture, Washington, D.C. regarding his non publication of a fruit catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Moody Brenneman, 1916)

List of birds found in West Virginia - Brooks, Earl Amos, 1871 -1952 (Tribune Printing Co, 1909)

List of birds in vicinity of Fishkill-on-Hudson, N.Y - Stearns, Winfrid Alden, 1852 -1909 (Privately Printed, 1880)

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

... List of foreign correspondents of the Smithsonian institution. Corrected to January, 1862 - Smithsonian Institution (Smithsonian institution, 1862)

List of Hymenoptera, with descriptions and figures of the typical specimens in the British museum. Vol. I. Tenthrediniadæ and Siricidæ - British Museum (Natural History). Department of Zoology. (Printed by Order of the Trustees, 1882)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1985)

List of journals, with abbreviations used in the catalogue as references (Published for the International Council by the Royal Society of London, 1903)

List of the birds of Cobham, Virginia - Rives, William C. (Davis & Pitman, Printers, 1884)

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)

A list of the birds of Minnesota - Hatch, P. L. (1881)

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

A list of the birds of New England - Coues, Elliott, 1842 -1899 (Essex Institute Press, 1868)

A list of the birds of New Hampshire - Allen, Glover M. (Glover Morrill), 1879 -1942 (Nature Study press, 1903)

A list of the birds of New Hampshire - Allen, Glover M. (Glover Morrill), 1879 -1942 (Nature press, 1903)

A list of the birds of the West Indies, including the Bahama Islands and the Greater and Lesser Antilles, excepting the Islands of Tobago and Trinidad - Cory, Charles B. (Charles Barney), 1857 -1921 (Estes & Lauriat, 1885)

A list of the birds of the West Indies, including the Bahama Islands, and the Greater and Lesser Antilles, excepting the islands of Tobago and Trinidad - Cory, Charles B. (Charles Barney), 1857 -1921 (Estes & Lauriat, 1886)

A list of the genera of birds : with their synonyma an indication of the typical species of each genus - Gray, George Robert, 1808 -1872 (R. and J.E. Taylor, 1840)

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

List of the specimens of birds in the collection of the British Museum - Gray, George Robert, 1808 -1872 (printed by the order of the Trustees, 1844)

List of the specimens of birds in the collection of the British Museum - Gray, George Robert, 1808 -1872 (printed by the order of the Trustees, 1848)

List of the specimens of dipterous insects in the collection of the British museum - Gray, John Edward 1800 -1875 (Printed by order of the Trustees, 1848)

List of the specimens of homopterous insects in the collection of the British Museum ... - Gray, John Edward 1800 -1875 (Printed by Order of the Trustees, 1858)

List of the specimens of British animals in the collection of the British Museum - Gray, John Edward 1800 -1875 (Printed by order of the Trustees, 1850)

List of the specimens of British animals in the collection of the British Museum - Gray, John Edward 1800 -1875 (Printed by order of the Trustees, 1852)

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 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)

A list of works on North American fungi. A supplemental list of works on North American fungi - Trelease, William, 1857 -1945 (Library of Harvard University, 1888)

Lives of labour; or, Incidents in the career of eminent naturalists and celebrated travellers - Brightwell, C. L. (Cecilia Lucy), 1811 -1875 (T. Nelson and sons, 1872)

Lives of men of letters & science, who flourished in the time of George III - Brougham; Vaux, Henry Brougham, Baron, 1778 -1868 (C. Knight, 1845)

Lives of men of letters & science who flourished in the time of George III - Brougham; Vaux, Henry Brougham, Baron, 1778 -1868 (C. Knight, 1845)

Lives of men of letters and science : who flourished in the time of George III - Brougham; Vaux, Henry Brougham, Baron, 1778 -1868 (Charles Knight, 1845)

Lives of the brothers Humboldt, Alexander and William - Bauer, Juliette. (Ingram, Cooke & co, 1852)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1972)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1978)

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

Livres des Familles (1844)

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)

Lohrman's 1932 annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lohrman Seed Company, 1932)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1833)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1834)

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, 1839)

London Bird Report - London Natural History Society. (1997)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1840)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1841)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1842)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1849)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1853)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1854)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1858)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1863)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1871)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1875)

The London, Edinburgh and Dublin philosophical magazine and journal of science (Taylor & Francis, 1879)

London Naturalist - London Natural History Society. (London Natural History Society, 1930)

London Naturalist - London Natural History Society. (London Natural History Society, 1933)

London Naturalist - London Natural History Society. (London Natural History Society, 1935)

London Naturalist - London Natural History Society. (London Natural History Society, 1990)

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

Loudon's encyclopaedia of plants; comprising the specific character, description, culture, history, application in the arts, and every other desirable particular respecting all the plants indigenous to, cultivated in, or introduced into Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longmans, Green, 1866)

Loudon's Hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain. Part I. The Linnaean arrangement : part II. The Jussieuean arrangement - Loudon, J. C. (John Claudius), 1783 -1843 (Printed for Longman, Rees, Orme, Brown, and Green & Longman, 1839)

Loudon's hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longman(etc],), 1850)

Loudon's hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longman(etc],), 1839)

Loudon's Hortus britannicus.A catalogue of all the plants indigenous, cultivated in, or introduced to Britain. Part I. The Linnaean arrangement... Part II. The Jussieuean arrangement... - Loudon, J. C. (John Claudius), 1783 -1843 (Printed for Longman, Rees, Orme, Brown, and Green, 1890)

Loudon's Hortus britannicus.A catalogue of all the plants indigenous, cultivated in, or introduced to Britain. Part I. The Linnaean arrangement... Part II. The Jussieuean arrangement... - Loudon, J. C. (John Claudius), 1783 -1843 (Printed for Longman, Rees, Orme, Brown, and Green, 1830)