. . . "Polish United People's Party" . . . . . . "ZSL" . "United People's Party (Poland)" . . "1949" . "1989-11-29" . . . . "SL/ZSL" . . . . . . "1949-11-27" . "United People's Party (ZSL)" . . "ZSL party" . . . "United People's Party (Poland)" . . "United People's Party" . . . . . "1989" . . "PSL" . .