@book{Piasecki1990,
author = {Piasecki, E.},
title= {Ludnosc Parafii Bejskiej w Swietle Ksiag Metryklanych z XVIII-XX W. Studium Demograficzne
Population of the Bejsce Parish (Kielce voivodeship, Poland) in the light of parish registers of the 18th-20th centuries. A demographic study},
year = {1990},
address = {Warszawa},
publisher = {PWN},
}