Columbia subject headings:
Peasants--Political activity--Poland--History.
Populism--Poland--History.
Socialism--Poland--History.
Working class--Political activity--Poland--History.
Harvard subject headings:
Peasants--Poland--Political activity--History.
Peasants--Political activity--Poland--History.
Populism--Poland--History
Socialism--Poland
Socialism--Poland--History
Working class--Poland--Political activity--History.
Working class--Political activity--Poland--History.
Princeton subject headings:
Peasants--Political activity--Poland.
Political parties--Poland--History.
Polska Partia Socjalistyczna--History.
Stronnictwo Ludowe (Poland)--History.
Working class--Political activity--Poland.