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Libraries
21
Refugees
21
World politics
21
Italians
20
Missions, Polish
20
Music
20
Nobility
20
Temperance
20
Catholics, Slovak
19
Gay people
19
Hungarian Americans
19
Literature
19
Natural history
19
Patriotic societies
19
Américains d'origine allemande
18
Emigration and immigration law
18
Ethnic groups
18
Relations
18
Working class
18
AIDS (Disease)
17
Art, American
17
Arts
17
Law
17
Legal status, laws, etc
17
Américains d'origine slovaque
16
Children
16
Ethnicity
16
Historic sites
16
Manners and customs
16
Social sciences
16
Sources
16
Américains d'origine lettone
15
Baptists
15
Chess
15
Endowments
15
English literature
15
Finance
15
Labor unions
15
Lutherans, Latvian
15
Mennonites
15
Population
15
Research
15
Societies
15
Vietnamese Americans
15
World War, 1914-1918
15
Activité politique
14
Américains d'origine lituanienne
14
Antiques
14
Catholics
14
Gardening
14
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