Brief instructions to Massachusetts Forest Wardens - Massachusetts. State Forester. (The Forester, 1907)

Broad-leaved evergreens, trees, shrubs and rock garden plants, lilies, etc. : spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1933)

Brooklyn Botanic Garden record - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1934)

Brooklyn Botanic Garden record - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1937)

Brooklyn Botanic Garden record - Brooklyn Botanic Garden. (Brooklyn Botanic Garden, 1942)

The Bryologist - Grout, A. J. (Abel Joel), 1867 -1947 (American Bryological and Lichenological Society, 1922)

Budd's flora of the Canadian Prairie Provinces (Research Branch, Agriculture Canada, 1987)

Bulletin - Pennsylvania. Department of Forest; Waters. (The Department, 1902)

Bulletin - Pennsylvania. Department of Forestry. (The Department, 1901)

Bulletin - United States. Forest Service. (G.P.O, 1905)

Bulletin - Pennsylvania. Department of Forest; Waters. (The Department, 1923)

Bulletin - New York State Museum; Science Service. (University of the State of New York, 1956)

Bulletin - New York State Museum. (University of the State of New York, State Education Dept, 1979)

Bulletin - National Museum of Canada. (National Museum of Canada, 1917)

Bulletin - New York State Museum; Science Service. (University of the State of New York, 1973)

Bulletin - New York State Museum. (University of the State of New York, State Education Dept, 1992)

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, 1931)

Bulletin - National Museum of Canada. (National Museum of Canada, 1935)

Bulletin - National Museum of Canada. (National Museum of Canada, 1938)

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

Bulletin - National Museum of Canada. (National Museum of Canada, 1940)

Bulletin - National Museum of Canada. (National Museum of Canada, 1958)

Bulletin - National Museum of Canada. (National Museum of Canada, 1945)

Bulletin - National Museum of Canada. (National Museum of Canada, 1949)

Bulletin - National Museum of Canada. (National Museum of Canada, 1950)

Bulletin - National Museum of Canada. (National Museum of Canada, 1951)

Bulletin - National Museum of Canada. (National Museum of Canada, 1952)

Bulletin - National Museum of Canada. (National Museum of Canada, 1953)

Bulletin - National Museum of Canada. (National Museum of Canada, 1954)

Bulletin - National Museum of Canada. (National Museum of Canada, 1955)

Bulletin - National Museum of Canada. (National Museum of Canada, 1957)

Bulletin - National Museum of Canada. (National Museum of Canada, 1961)

Bulletin - National Museum of Canada. (National Museum of Canada, 1962)

Bulletin - National Museum of Canada. (National Museum of Canada, 1963)

Bulletin - Biological Survey - United States. Bureau of Biological Survey. (Govt. print. off, 1905)

Bulletin de la Société botanique de France - Centre national de la recherche scientifique (France) (La Société, 1900)

Bulletin de la Société mycologique de France - Société botanique de France. (La Société, 1885)

Bulletin from the laboratories of natural history of the State University of Iowa - University of Iowa. (The University, 1925)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1929)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1930)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1941)

Bulletin - Illinois. Natural History Survey Division (State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1947)

Bulletin / Maine Agricultural Experiment Station - Maine Agricultural Experiment Station. (Maine Agricultural Experiment Station, 1909)

Bulletin / New York State Museum - New York State Museum. (New York State Education Dept, 1899)

Bulletin / New York State Museum - New York State Museum. (New York State Education Dept, 1905)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1898)

Bulletin of the American Museum of Natural History - Allen, J. A. (Joel Asaph), 1838 -1921 (American Museum of Natural History, 1913)

Bulletin of the British Museum (Natural History) Entomology - British Museum (Natural History) (The Museum, 1972)

Bulletin of the Brooklyn Entomological Society - Brooklyn Entomological Society (The Society, 1964)

Bulletin of the Illinois State Laboratory of Natural History - Illinois State Laboratory of Natural History. (The Laboratory, 1910)

Bulletin of the Josselyn Botanical Society of Maine - Josselyn Botanical Society of Maine. (1908)

Bulletin of the Maryland Herpetological Society - Maryland Herpetological Society. (Maryland Herpetological Society, Dept. of Herpetology, Natural History Society of Maryland, 1965)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1863)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1919)

Bulletin of the Museum of Comparative Zoology at Harvard College - Harvard University. Museum of Comparative Zoology. (The Museum, 1971)

Bulletin of the New York Botanical Garden - New York Botanical Garden (Published for the Garden by the New Era Printing Co, 1921)

Bulletin of the New York Botanical Garden - New York Botanical Garden (Published for the Garden by the New Era Printing Co, 1929)

Bulletin of the New York Botanical Garden - New York Botanical Garden (Published for the Garden by the New Era Printing Co, 1900)

The Bulletin of the Pictou Academy Scientific Association - Pictou Academy Scientific Association. (Pictou Academy, 1906)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1889)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1896)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1897)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1913)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1915)

Bulletin of the Torrey Botanical Club - Torrey Botanical Club. (Torrey Botanical Club, 1916)