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

Lehrbuch der vergleichenden mikroskopischen Anatomie der Wirbeltiere - Royal College of Physicians of Edinburgh. (G. Fischer, 1914)

Lehrbuch der Zoologie für Studierende und Lehrer - Boas, J. E. V. (Johan Erik Vesti), 1855 -1935 (G. Fischer, 1890)

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

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

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

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, 1906)

Life histories of North American gulls and terns : order Longipennes - Smithsonian Institution (Govt. Print. Off, 1921)

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

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 (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 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 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 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)

The living world: a complete natural history of the world's creatures, fishes, reptiles, insects, birds and mammals - Buel, James W. (James William), 1849 -1920 (Holloway & co, 1889)

Loch Creran: notes from the West Highlands - Smith, William Anderson, 1842 - (Gardner, 1887)

The London and Edinburgh philosophical magazine and journal of science (Richard and John E. Taylor, 1837)

London birds, and other sketches - Pigott, Thomas Digby, 1840 -1927 (Arnold, 1902)

Lord Lilford on birds - Thorburn, Archibald, 1860 -1935 (Hutchinson, 1903)

Lord Lilford on birds: being a collection of informal and unpublished writings by the late president of the British Ornithologists' Union. With contributed papers upon falconry and otter hunting, his favourite sports - Thorburn, Archibald, 1860 -1935 (Hutchinson, 1903)

Lord Lilford Thomas Littleton, fourth baron F.Z.S. : president of the British Ornithologists' Union - Lilford, Thomas Littleton Powys, Baron, 1833 -1896 (Smith, Elder, 1900)

Lotos - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (Verlag des Deutschen Naturwissenschaftlich-Medizinischen Vereines für Böhmen "Lotos", 1911)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1855)

Mährens und k. k. Schlesiens Fische, Reptilien und Vögel : ein Beitrag zur Fauna beider Kronländer - Heinrich, Albin. (Nitsch und Grosse, 1856)

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, 1835)

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, 1837)

The Magazine of natural history / conducted by Edward Charlesworth - Charlesworth, Edward. (s.n.], 1838)

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

The Magazine of natural history / conducted by Edward Charlesworth - Charlesworth, Edward. (s.n.], 1840)

Magazine of zoology and botany - Westwood, J. O. (John Obadiah), 1805 -1893 (1837)

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

Magyarország madarai különös tekintettel gazdasági jelentöségökre. Irta Chernelházi Chernel István. Képekkel ellátta Nécsey István. Intézte Herman Ottó - Herman, Ottó, 1835 -1914 (1899)

Die Mallophagen mit besonderer Berücksichtigung der von Dr. Meyer gesammelten Arten - Taschenberg, Otto, 1854 -1922 (E. Blochmann, 1882)

Manual of British birds : including the essential characteristics of the orders, families, genera, and species - MacGillivray, William 1796 -1852 (Printed for Adam Scott, 1846)

A manual of British ornithology : being a short description of the birds of Great Britain and Ireland ... - MacGillivray, William 1796 -1852 (Scott, Webster, and Geary, 1842)

A manual of British vertebrate animals, or, Descriptions of all the animals belonging to the classes, Mammalia, Aves, Reptilia, Amphibia, and Pisces, which have been hitherto observed in the British Islands, including the domesticated, naturalized, and extirpated species : the whole systematically aranged - Jenyns, Leonard, 1800 -1893 (Printed at the Pitt Press, by John Smith, sold by J. & J.J. Deighton, 1835)

A manual of British vertebrate animals; or, Descriptions of all the animals belonging to the classes, mammalia, aves, reptilia, amphibia, and pisces - Jenyns, Leonard, 1800 -1893 (Printed by J. Smith, sold by J. & J.J. Deighton, and T. Stevenson, 1835)

A manual of British vertebrate animals: or Descriptions of all the animals belonging to the classes, Mammalia, Aves, Reptilia, Amphibia, and Pisces, which have been hitherto observed in the British Islands: including the domesticated, naturalized, and extirpated species: the whole systematically arranged - Jenyns, Leonard, 1800 -1893 (Printed by J. Smith, sold by J. & J.J. Deighton; [etc., etc.], 1835)

A manual of North American birds - Ridgway, Robert, 1850 -1929 (J. B. Lippincott Company, 1896)

A manual of North American birds - Ridgway, Robert, 1850 -1929 (J.B. Lippincott Co, 1900)

A manual of North American birds - Ridgway, Robert, 1850 -1929 (Lippincott, 1887)

A manual of North American birds - Ridgway, Robert, 1850 -1929 (J. B. Lippincott, 1887)

A manual of North American birds - Ridgway, Robert, 1850 -1929 (J.B. Lippincott, 1887)

A manual of ornithology - Stearns, Winfrid Alden, 1852 -1909 (Printed for theauthor at the Atlantic University Print. Office, 1895)

A manual of ornithology - Stearns, Winfrid Alden, 1852 -1909 (Printed for the author at the Atlanta University Printing Office, 1895)

A manual of the birds of Australia - Iredale, Tom, 1880 -1972 (H.F. & G. Witherby, 1921)

A manual of the ornithology of the United States and of Canada - Nuttall, Thomas, 1786 -1859 (Hilliard and Brown, 1834)

Manual of the vertebrates of the northern United States, including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species - Jordan, David Starr, 1851 -1931 (Jansen, McClurg, 1884)

Manual of the vertebrates of the northern United States, including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species - Jordan, David Starr, 1851 -1931 (Jansen, McClurg & company, 1880)

Manual of the vertebrates of the northern United States, including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species - Jordan, David Starr, 1851 -1931 (Jansen, McClurg & Company, 1884)

Manual of the vertebrates of the northern United States, including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species. By David Starr Jordan ... - Jordan, David Starr, 1851 -1931 (Jansen, McClurg & company, 1880)

Manual of the vertebrates of the northern United States, including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species - Jordan, David Starr, 1851 -1931 (Jansen, McClurg, 1880)

Manual of the vertebrates of the northern United States including the district east of the Mississippi River, and north of North Carolina and Tennessee, exclusive of marine species - Jordan, David Starr, 1851 -1931 (Jansen, McClurg & Co, 1876)

Manuale di ornitologia italiana; elenco descrittivo degli uccelli stazionari o di passaggio finora osservati in Italia - Arrigoni degli Oddi, Ettore, 1867 -1942 (U. Hoepli, 1904)

Manuel d'ornithologie, ou Description des genres et des principales espèces d'orseaux - Lesson, R. P. (René Primevère), 1794 -1849 (Roret, 1828)

Manuel d'ornithologie, ou, Tableau systématique des oiseaux qui se trouvent en Europe : précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabétique des espèces - Baird, Spencer Fullerton, 1823 -1887 (Chez H. Cousin, 1820)

Manuel d'ornithologie, ou, Tableau systématique des oiseaux qui se trouvent en Europe : précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabétique des espèces - Baird, Spencer Fullerton, 1823 -1887 (Chez H. Cousin, 1840)

Manuel d'ornithologie, ou Tableau systématique des oiseaux qui se trouvent en Europe : précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabeétique des espèces - Temminck, C.J. (Coenraad Jacob), 1778 -1858 (G. Dufour [etc.], 1820)

Manuel d'ornithologie, ou Tableau systématique des oiseaux qui se trouvent en Europe; précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabeétique des espèces - Temminck, C.J. (Coenraad Jacob), 1778 -1858 (G. Dufour [etc.], 1820)

Manuel d'ornithologie, ou Tableau systématique des oiseaux qui se trouvent en Europe : précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabétique des espèces - Temminck, C.J. (Coenraad Jacob), 1778 -1858 (Chez Gabriel Dufour, 1820)