Topic
Biography & Autobiography / Science & Technology
1
History
1
History / Historical Geography
1
History / Polar Regions
1
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1
Literary Criticism / Subjects & Themes
1
Political Science / Public Policy / Environmental Policy
1
Science / Global Warming & Climate Change
1
Science / Paleontology
1
bisacsh:BIO015000
1
bisacsh:HIS000000
1
bisacsh:HIS046000
1
bisacsh:HIS052000
1
bisacsh:LIT006000
1
bisacsh:LIT025000
1
bisacsh:POL044000
1
bisacsh:SCI054000
1
bisacsh:SCI092000
1