Genre
Legislative hearings
68
Legislative materials
61
History
21
Congresses
16
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12
Treaties
6
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4
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3
Documentary films
3
Interviews
3
Messages
3
Nonfiction films
3
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3
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2
Filmed interviews
2
Sources
2
Case studies
1
Congress
1
Databases
1
Educational films
1
Essays
1
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1
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1
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1
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1
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1
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1