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(1899)
49
Bears
49
Bering Sea controversy
Biogeography
49
Biological Survey
49
Botany
49
Bureau of Biological Survey
49
Clippings
49
Division of Biological Survey
Division of Ornithology and Mammalogy
49
Geological and Geographical Survey of the Territor
Harriman Alaska Expedition
49
Letterpress copybooks
49
Life zones
49
Manuscripts for publication
49
Natural history
North America
49
Notebooks
49
Notes
49
Ornithology
49
Scrapbooks
United States
49
Wildlife conservation
49
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