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Places
- United States -- Social conditions8
- United States -- Politics and government -- 20th century3
- Harlem (New York, N.Y.)2
- New York (N.Y.)2
- United States -- Politics and government2
- Chile1
- China -- Social conditions1
- Czechoslovakia1
- Eklutna Dam (Alaska)1
- Europe -- Ethnic relations -- History -- 20th century1
- Germany (East)1
- Germany -- Economic conditions -- 1918-19451
- Germany -- History -- 1933-19451
- Germany -- Social conditions1
- Great Lakes (North America) -- Regulation1
- Harlem (New York, N.Y.) -- Religious life and customs1
- Harlem (New York, N.Y.) -- Social life and customs1
- Harlem (New York, N.Y.) -- Statistics, Vital1
- India -- Politics and government1
- India -- Social conditions1