British birds (1955)

British birds (1956)

British birds (1957)

British birds (1958)

British birds (1959)

British birds (1960)

British birds (1961)

British birds (1963)

British birds (1965)

British birds (1966)

British birds (1967)

British birds (1968)

British birds (1969)

British birds (1970)

British birds (1971)

British birds (1972)

British birds (1973)

British birds (1974)

British birds (1975)

British birds (1976)

British birds (1977)

British birds (1978)

British birds (1979)

British birds (1980)

British birds (1981)

British birds (1982)

British birds (1983)

British birds (1984)

British birds (1985)

British birds (1986)

British birds (1987)

British birds (1988)

British birds (1989)

British birds (1991)

British birds (1992)

British birds (1993)

British birds (1994)

British birds (1997)

British birds (1999)

British birds (2000)

British birds (2001)

British birds (2002)

British birds (2003)

British birds (2004)

British birds (2005)

British birds (2006)

British birds (2007)

British birds (2008)

British birds (2010)

British birds (2013)

British birds in their haunts - Johns, C. A. (Charles Alexander), 1811 -1874 (Society for Promoting Christian Knowledge, 1862)

British birds in their haunts - Johns, C. A. (Charles Alexander), 1811 -1874 (Society for Promoting Christian Knowledge, 1893)

British birds - Thorburn, Archibald, 1860 -1935 (Longmans, Green, 1915)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1999)

British Ornithologists' Club occasional publications - British Ornithologists' Club. (British Ornithologists' Club, 1994)

British Ornithologists' Club occasional publications - British Ornithologists' Club. (British Ornithologists' Club, 1996)

British Ornithologists' Club occasional publications - British Ornithologists' Club. (British Ornithologists' Club, 1999)

British Ornithologists' Club occasional publications - British Ornithologists' Club. (British Ornithologists' Club, 2010)

Brockhaus' Konversations-Lexikon (F.A. Brockhaus, 1892)

Brockhaus' Konversations-Lexikon (F.A. Brockhaus, 1895)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 1997)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 1998)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2001)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2002)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2005)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2006)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2011)

Buletinul Societății de Șciințe din Bucureșci, România = Bulletin de la Société des sciences de Bucarest, Roumanie - Societatea de Științe din București. (Societatea, 1892)

Bulletin - Natural History Society of Maryland (The Society, 1930)

Bulletin - New York State Museum. (University of the State of New York, 1951)

Bulletin - Natural History Society of Maryland (The Society, 1933)

Bulletin - New York State Museum; Science Service. (University of the State of New York, 1958)

Bulletin - Société des amis des sciences naturelles de Rouen. (1889)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1998)

Bulletin - National Museum of Canada. (National Museum of Canada, 1926)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 2000)

Bulletin - New York State Museum. (University of the State of New York, State Education Dept, 2003)

Bulletin - National Museum of Canada. (National Museum of Canada, 1934)

Bulletin - United States National Museum (G.P.O, 1921)

Bulletin - United States National Museum (G.P.O, 1926)

Bulletin - United States National Museum (G.P.O, 1929)

Bulletin - United States National Museum (G.P.O, 1937)

Bulletin - United States National Museum (G.P.O, 1931)

Bulletin - United States National Museum (G.P.O, 1938)

Bulletin - United States National Museum (G.P.O, 1845)

Bulletin - United States National Museum (G.P.O, 1946)