Other
Economic conditions
103
Politics and government
74
History
58
Economic history
38
Social conditions
25
World War, 1939-1945
22
Foreign relations
19
Civilization
16
Politique et gouvernement
16
Conditions économiques
14
Histoire
13
Diplomatic relations
12
Depressions
11
Social life and customs
11
Economic policy
9
Description and travel
8
World War, 1914-1918
7
Communism
6
Population
6
Working class
6
polityka i rządy
6
Capitalism
5
Economic aspects
5
Emigration and immigration
5
Labor
5
Minorities
5
Reconstruction (1914-1939)
5
Relations extérieures
5
Descriptions et voyages
4
Economics
4
Guerre mondiale, 1939-1945
4
Industrial policy
4
Industries
4
Labor and laboring classes
4
Labor movement
4
Lithuanians
4
New Deal, 1933-1939
4
Polish people
4
Presidents
4
Statesmen
4
Travel
4
Unemployed
4
Chefs d'État
3
Commerce
3
Germans
3
Immigrants
3
International relations
3
Journalists
3
Nineteen twenties
3
Peace
3
more ...