Columbia subject headings:
Harvard subject headings:
Europe, Eastern--Politics and government.
Europe, Eastern--Rural conditions.
Peasants--Europe, Eastern--Political activity--History.
Political parties--Europe, Eastern--History.
Populism--Europe, Eastern--History.
Princeton subject headings:
Peasants--Bulgaria--Political activity.
Peasants--Czechoslovakia--Political activity.
Peasants--Poland--Political activity.