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Britton, Nathaniel Lord, 1859-1934
18
Brown, Addison, 1830-1913
18
Bell, Robert, 1841-1917
4
Geological and Natural History Survey of Canada
4
Macoun, John, 1831-1920
4
Smithsonian Migratory Bird Center
4
Bailey, Vernon, 1864-1942
2
Bell, Robert
2
Brunet, Ovide, 1826-1876
2
Cody, William J.
2
Fosberg, F. Raymond, Francis Raymond 1908-1993
2
Greenberg, Russell
2
Hazard, Gjon
2
Hitchcock, A. S. (Albert Spear), 1865-1935
2
Porsild, A. E. 1901-
2
Raup, Hugh M. (Hugh Miller), 1901-1995
2
Stanek, Walter
2
White, David
2
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Botany
Canada
United States
22
Field notes
12
Geology
6
Newfoundland and Labrador
6
Northwest Territories
6
Ornithology
6
Zoology
6
England
4
migratory birds
4
(François André)
2
1770-1885
2
1897
2
Baffin Island
2
California
2
Canadian Arctic
2
Cape Breton Island
2
Cape Town
2
Catalogs
2
Cryptogams
2
Damage to
2
Diseases
2
Diseases of
2
Environmental
2
Environmental impacts
2
F. A
2
Flora
2
Forest resources
2
Forestry
2
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