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 (2009)

British birds (2010)

British birds (2011)

British birds (2012)

British birds (2013)

British birds (2014)

British birds (2015)

British birds (2016)

British birds & their eggs : with a new method of identification - Boraston, John Maclair. (W. & R. Chambers, 1909)

British birds and their eggs : with a new method of identification - Boraston, John Maclair. (W. & R. Chambers, 1909)

British birds in their haunts - Johns, C. A. (Charles Alexander), 1811 -1874 (G. Routledge & Sons, limited, 1909)

British birds: key list - Irby, L. Howard (Leonard Howard Lloyd), 1836 -1905 (R. H. Porter, 1892)

British birds : key list - Irby, L. Howard (Leonard Howard Lloyd), 1836 -1905 (R.H. Porter, 1888)

British birds with their nests and eggs - Frohawk, Frederick William, 1861 -1946 (Brumby & Clarke, 1896)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1989)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2005)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 2013)

British nesting birds : a complete record of every species which nests in the British Isles - Westell, W. Percival (William Percival), 1874 -1943 (J.M. Dent, 1910)

Buceros : ENVIS newsletter : avian ecology and inland wetlands - Bombay Natural History Society. (Bombay Natural History Society, 2015)

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

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

Bulletin - Société des amis des sciences naturelles de Rouen. (1891)

Bulletin - Société des amis des sciences naturelles de Rouen. (1896)

Bulletin - Société des amis des sciences naturelles de Rouen. (1913)

Bulletin - New York State Museum; Science Service. (University of the State of New York, 1970)

Bulletin - United States National Museum (G.P.O, 1927)

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

Bulletin - United States National Museum (G.P.O, 1955)

Bulletin - United States National Museum (G.P.O, 1968)

Bulletin - United States National Museum (G.P.O, 1964)

Bulletin - Société des amis des sciences naturelles de Rouen. (1922)

Bulletin d'écologie - Société Française D'Écologie (Masson, 1973)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1897)

Bulletin de la Société impériale des naturalistes de Moscou - Moskovskoe obshchestvo liubitelei prirody. (Société impériale des naturalistes de Moscou, 1911)

Bulletin de la Société philomathique de Paris - Société Philomathique de Paris. (Société philomathique de Paris, 1882)

Bulletin de la Société portugaise des sciences naturelles - Sociedade Portuguesa de Ciências Naturais. (Société portugaise des sciences naturelles, 1910)

Bulletin de la Société d'histoire naturelle de Toulouse - Société d'histoire naturelle de Toulouse. (Bonnal et Gibrac, 1872)

Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu - Société fribourgeoise des sciences naturelles (Imprimerie Ant. Henseler, 1904)

Bulletin de la Société zoologique de France - Société zoologique de France. (La Société, 1880)

Bulletin de la Société zoologique de France - Société zoologique de France. (La Société, 1893)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1909)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1967)

Bulletin du Muséum national d'histoire naturelle - Muséum national d'histoire naturelle (France) (Imprimerie nationale, 1969)

Bulletin du Musée royal d'histoire naturelle de Belgique = Mededeelingen van het Korinklijk Natuurhistorisch Museum van België - Musée royal d'histoire naturelle de Belgique. (Le Musée, Imprimeur du Roi, 1886)

Bulletin du Musée royal d'histoire naturelle de Belgique = Mededeelingen van het Korinklijk Natuurhistorisch Museum van België - Musée royal d'histoire naturelle de Belgique. (Le Musée, Imprimeur du Roi, 1887)

Bulletin of miscellaneous information. Additional Series - Royal Botanic Gardens, Kew. (Royal Botanic Gardens], 1906)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2002)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2005)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2007)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2008)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2009)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2011)

Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2016)

Bulletin of the Amateur Entomologists' Society - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 1979)

Bulletin of the Amateur Entomologists' Society - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 1986)

Bulletin of the British Museum (Natural History) Entomology - British Museum (Natural History) (The Museum, 1952)

Bulletin of the British Museum (Natural History) Entomology - British Museum (Natural History) (The Museum, 1954)

Bulletin of the British Museum (Natural History) Zoology - British Museum (Natural History) (BM(NH), 1957)

Bulletin of the British Museum (Natural History) Zoology - British Museum (Natural History) (BM(NH), 1970)

Bulletin of the British Museum (Natural History) Zoology - British Museum (Natural History) (BM(NH), 1983)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1892)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1899)

Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1905)