Polish Workers' Party ended in 1948.
Polish United Workers' Party ended in 1990.
Polish Workers' Party was created in 1942.
Polish Socialist Workers Party was created in 1921.
Polish United Workers' Party was created on 1948-12-21.
Polish People's Party 'Wyzwolenie' ended in 1931.
Polish Christian Democratic Party ended in 1928.
Polish People's Party 'Piast' ended in 1931.
Mexican Workers' Party ended in 1987.
Wage Workers Party ended in 1910.
American Workers Party ended in 1934.
Combat Organization of the Polish Socialist Party ended in 1911.
Polish Socialist Party of the Prussian Partition ended in 1919.