British birds (1921)

British birds (1922)

British birds (1923)

British birds (1924)

British birds (1925)

British birds (1926)

British birds (1927)

British birds (1928)

British birds (1929)

British birds (1930)

British birds (1931)

British birds (1932)

British birds (1933)

British birds (1934)

British birds (1935)

British birds (1936)

British birds (1937)

British birds (1938)

British birds (1939)

British birds (1940)

British birds (1941)

British birds (1942)

British birds (1943)

British birds (1944)

British birds (1946)

British birds (1947)

British birds (1948)

British birds (1949)

British birds (1950)

British birds (1954)

British birds (1955)

British birds (1956)

British birds (1957)

British birds (1959)

British birds (1963)

British birds (1966)

British birds (1967)

British birds (1968)

British birds (1970)

British birds (1974)

British birds (1977)

British birds (1978)

British birds (1980)

British birds (1982)

British birds (1985)

British birds (1989)

British birds (1992)

British birds (1993)

British birds (1995)

British birds (1997)

British birds (1998)

British birds (1999)

British birds (2000)

British birds (2006)

British birds (2010)

British birds (2012)

British birds (2013)

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

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

The British flora : comprising the phaenogamous or flowering plants, and the ferns - Hooker, William Jackson, Sir, 1785 -1865 (1860)

British journal of entomology and natural history - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1993)

The British nature book; a complete handbook and guide to British nature study, embracing the mammals, birds, reptiles, fish, insects, plants, etc., in the United Kingdom - Sedgwick, Sidney Newman. (T.C. & E.C. Jack, Ltd, 1922)

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

Brockhaus' Konversations-Lexikon (F.A. Brockhaus, 1893)

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

Brockhaus' Konversations-Lexikon (F.A. Brockhaus, 1894)

Brothers EIS area in Central Oregon : wildlife habitat interrelationships : working draft - United States. Bureau of Land Management. Oregon State Office. (Bureau of Land Management, Oregon State Office, 1982)

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, 2004)

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

Büffons Naturgeschichte der Vögel : aus dem Französischen, mit Anmerkungen und Zusätzen - Buffon, Georges Louis Leclerc, comte de, 1707 -1788 (bey Hermann Heinrich Holle, 1776)

Bulbs & plants for fall planting, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Holm & Olson, Inc, 1932)

Bulbs for 1942 autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1942)

Bulbs for 1943 autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1943)

Bulbs for autumn planting, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1944)

Bulbs for autumn planting, 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1948)

Bulbs for autumn planting, 1949 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1949)

Bulbs for fall planting, autumn 1931 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Triangle Farms, 1931)

Bulbs for fall planting : daffodils, tulips, iris (bulbous), hyacinths, lilies, montbretias, crocus - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank C. Riggs Company, 1933)

Bulbs, perennials : fall price-list, 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bristol Nurseries, Incorporated, 1931)

Bulbs, plants, roses, shrubs, fruits for fall planting, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1941)

Bulbs, roses, perennials : fall price-list, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bristol Nurseries, Incorporated, 1932)

Bulbs, seeds, plants, 1939 for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1939)

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

Bulletin - New York State Museum. (University of the State of New York, State Education Dept, 1976)

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

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

Bulletin - United States National Museum (G.P.O, 1930)

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, 1961)

Bulletin - United States National Museum (G.P.O, 1963)