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)

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)

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, 1883)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1890)

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

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

Life histories of North American petrels and pelicans and their allies : order Tubinares and order Steganopodes - Bent, Arthur Cleveland, 1866 -1954 (Govt. Print. Off, 1922)

Life histories of North American petrels and pelicans and their allies; order Tubinares and order Steganopodes - Smithsonian Institution (Govt. print. off, 1922)

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 the sea; or, The nature and habits of marine animals - Wraxall, Frederick Charles Lascelles, Sir, bart., 1828 -1865 (Houlston & Wright, 1860)

The life of Richard Owen - Owen, Richard, 1804 -1892 (J. Murray, 1894)

The life of vertebrates - Young, J. Z. (John Zachary), 1907 -1997 (Oxford University Press, 1962)

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

A List of birds' eggs in the collection of Philip Crowley - Crowley, Philip (Waddon House, 1883)

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

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

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 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 Dakota birds : found in the Big Coulee, Turtle Mountains and Devils lake region. As noted during the years 1890 to 1896 and verified in the subsequent years to date - Judd, Elmer T. (1917)

List of North Dakota birds : found in the Big Coulee, Turtle Mountains and Devils Lake region, as noted during the years 1890 to 1896 and verified in the subsequent years to date - Judd, Elmer T. (Published by the author, 1917)

List of skeletons and crania in the Section of Comparative Anatomy of the United States Army Medical Museum : for use during the International Exhibition of 1876 in connection with the representation of the Medical Department, U.S. Army - Yarrow, H. C. (Harry Crécy) 1840 -1929 (Army Medical Museum, 1876)

List of skeletons and crania in the section of comparative anatomy of the United States Army Medical Museum : for use during the International Exhibition of 1876 in connection with the representation of the Medical Department, U.S., Army - Yarrow, H. C. (Harry Crécy) 1840 -1929 (The Museum, 1876)

List of the animals in the gardens of the Zoological Society : with notices respecting them : May, 1837 - Zoological Society of London. (Printed by Richard and John E. Taylor, 1837)

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)

A list of the birds of Australia - Hull, A. F. Basset, Arthur Francis Basset 1862 -1945 (F. Cunninghame for A. Basset Hull, 1909)

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)

A list of the birds of eastern North America - Cory, Charles B. (Charles Barney), 1857 -1921 (For sale by B. Whidden, 1896)

A list of the birds of Florida - Cory, Charles B. (Charles Barney), 1857 -1921 (For sale by B. Whidden, 1896)

A list of the birds of Grenada, West Indies - Wells, John Grant. ([s.n.], 1886)

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

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 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 press, 1903)

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 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 and an indication of the typical species of each genus - Gray, George Robert, 1808 -1872 (Printed and sold by R. and J.E. Taylor, 1841)

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 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 the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Zoological Society of London. (Printed for the Society, and sold ... Longmans, Green, Reader, and Dyer, 1883)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Zoological Society of London. (Printed for the Society, 1896)

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, 1896)

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 by Longmans, Green, Reader, and Dyer, 1883)

List of the vertebrated animals now or lately living in the gardens of the Zoological Society of London - Zoological Society of London. (printed for the Society, 1883)

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)

Lives of eminent zoologists, from Aristotle to Linnaeus : with introductory remarks on the study of natural history, and occasional observations on the progress of zoology - MacGillivray, William 1796 -1852 (Oliver & Boyd, 1834)

Lord Howe Island. Its zoology, geology, and physical characters - Ogilby, J. Douglas (James Douglas), 1853 -1925 (C. Potter, government printer, 1889)

Lotos - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (Verlag des Deutschen Naturwissenschaftlich-Medizinischen Vereines für Böhmen "Lotos", 1908)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1852)

M. Th. Brünnichii Ornithologia borealis, sistens collectionem avium : ex omnibus, Imperio danico subjectis, provinciis insulisqve borealibus Hafniæ factam, cum descriptionibus novarum, nominibus incolarum, locis natalium et icone - Brünnich, M. Thr. (Morten Thrane), 1737 -1827 (Typis Andreæ Hartvigii Godiche, 1764)

M. Th. Brünnichii Zoologiae fundamenta praelectionibus academicis accommodata = Grunde i dyrelaeren - Brünnich, M. Thr. (Morten Thrane), 1737 -1827 (Apud Frider. Christ. Pelt, 1772)

A madarak hasznáról és káráról - Herman, Ottó, 1835 -1914 ([Franklin-társulat nyomdája], 1901)

Magazijn voor Wetenschappen, Kunsten en Letteren

Magazin fur allgemeine Natur- und Thier-Geschichte - Mueller, Ferdinand von, 1825 -1896 (Johann Daniel Gotthelf Brose [etc.], 1789)

Magazin für das Neueste aus der Physik und Naturgeschichte - Lichtenberg, Georg Christoph, 1742 -1799 (Carl Wilhelm Ettinger, 1781)

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, 1829)

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, 1830)

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, 1832)

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, 1834)

The Magazine of natural history / conducted by Edward Charlesworth - Charlesworth, Edward. (s.n.], 1839)

Magrath northern leopard frog reintroduction project : final report - Alberta. Fish; Wildlife Division. (Alberta Sustainable Resource Development, Fish & Wildlife Division, Resource Data and Species At Risk Section, 2006)

A magyar halászat könyve. A Kir. magyar természettudományi társulat megbizásából - Herman, Ottó, 1835 -1914 (Kiadja A.K.M. Termeszettudományi társulat, 1887)

Magyarország Madarai; hazai madárvilág megismerésének vezérfonala - Madarász, Gyula, 1858 -1931 (1899)