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The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1988)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1999)

The journal of raptor research - Raptor Research Foundation. (Raptor Research Foundation, 2004)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1913)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1920)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1922)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1924)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1926)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1927)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1930)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1931)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1936)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1933)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1938)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1944)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1945)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1946)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1947)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1948)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1950)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1953)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1951)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1955)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1960)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1962)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1965)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1968)

The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1969)

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The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 1991)

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The journal of the Bombay Natural History Society - Bombay Natural History Society. (Bombay Natural History Society, 2002)

The Journal of the East Africa and Uganda Natural History Society - Coryndon Memorial Museum. (Longmans, Green, 1936)

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Katalog der Collection von Erlanger in Nieder-Ingelheim a. Rh - Hilgert, Carl. (R. Friedlander und Sohn, 1908)

Katalog der Eiersammlung, nebst Beschreibungeh der aussereuropäischen Eier - Nehrkorn, Adolph. (R. Friedler & Sohn, 1910)

Katalog der Eiersammlung : nebst Beschreibungen der aussereuropäischen Eier - Nehrkorn, Adolph (H. Bruhn, 1899)

Katalog der Vogelsammlung aus der Provinz Hannover - Hannover (Germany : Province) (1897)

Kenya birds - National Museums of Kenya. Department of Ornithology. (Dept. of Ornithology, National Museums of Kenya and the Kenya Section of the International Council for Bird Preservation, 1995)

Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1887)

Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1890)

Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1894)

Key to North American birds. Containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary, inclusive of Greenland and lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1896)

A key to the birds of the lower Yangtse Valley, with popular descriptions of the species commonly seen - Gee, Nathaniel Gist, 1876 -1937 (Shanghai Mercury Limited, Print, 1917)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 1967)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 1989)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 1993)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 1998)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 1999)

The Kingbird - Federation of New York State Bird Clubs. (s.n, 2014)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1918)

Die Lebensweise der Vögel - Rennie, James, 1787 -1867 (Baumgärtner, 1835)

Lehrbuch der Forstwirtschaft für Waldbau-und Försterschulen, sowie zum ersten forstlichen unterrichte für Aspiranten des Forstverwaltungsdienstes - Eckert, Karl, (W. Frick, 1908)

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)

The Lincolnshire naturalist : transactions of the Lincolnshire Naturalists' Union - Lincolnshire Naturalists' Union. (Lincolnshire Naturalists' Union, 2004)

The Lincolnshire naturalist : transactions of the Lincolnshire Naturalists' Union - Lincolnshire Naturalists' Union. (Lincolnshire Naturalists' Union, 2015)

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

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

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

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1967)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1966)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1973)

Living bird - Cornell University. Laboratory of Ornithology. (Cornell Laboratory of Ornithology, 1979)

Local names of migratory game birds - McAtee, W. L. (Waldo Lee) 1883 -1962 (Govt. Print. Off, 1923)

London Bird Report - London Natural History Society. (1939)

London Bird Report - London Natural History Society. (1942)

London Bird Report - London Natural History Society. (1943)

London Bird Report - London Natural History Society. (1956)

London Bird Report - London Natural History Society. (1961)

London Bird Report - London Natural History Society. (1965)

London Bird Report - London Natural History Society. (1988)

London Bird Report - London Natural History Society. (1991)

London Bird Report - London Natural History Society. (1992)

London Bird Report - London Natural History Society. (1993)

London Bird Report - London Natural History Society. (1994)

London Bird Report - London Natural History Society. (1996)

London Bird Report - London Natural History Society. (1995)

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

London Bird Report - London Natural History Society. (1998)

London Bird Report - London Natural History Society. (1999)

London Bird Report - London Natural History Society. (2000)

London Bird Report - London Natural History Society. (2001)

London Bird Report - London Natural History Society. (2002)

London Bird Report - London Natural History Society. (2004)

London Bird Report - London Natural History Society. (2005)

London Bird Report - London Natural History Society. (2006)

London Bird Report - London Natural History Society. (2007)

London Bird Report - London Natural History Society. (2008)

London Bird Report - London Natural History Society. (2009)

London Bird Report - London Natural History Society. (2010)

London Bird Report - London Natural History Society. (2011)

London Bird Report - London Natural History Society. (2012)

London Bird Report - London Natural History Society. (2013)

London Bird Report - London Natural History Society. (2014)

London Bird Report - London Natural History Society. (2015)

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London Naturalist - London Natural History Society. (London Natural History Society, 1926)

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London Naturalist - London Natural History Society. (London Natural History Society, 1931)

London Naturalist - London Natural History Society. (London Natural History Society, 1932)

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London Naturalist - London Natural History Society. (London Natural History Society, 1934)

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

Lotos - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (Verlag des Deutschen Naturwissenschaftlich-Medizinischen Vereines für Böhmen "Lotos", 1913)

MAB Biosphere Reserves: Site Descriptions, post compilation 5 (October 1990) - WCMC (UNESCO MAB Programme, 1992)

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

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