Columbia subject headings:
Harvard subject headings:
Archiwum Państwowe w Piotrkowie Trybunalskim
Legislative bodies--History--Sources.
Parliamentary practice--History--Sources.
Parliamentary practice--Poland--History--Sources.
Princeton subject headings:
Archiwum Państwowe w Piotrkowie Trybunalskim.
Legislative bodies--History--Sources.
Parlamentary practice--History--Sources.
Parlamentary practice--Poland--History--Sources.