HANUSIK, Krystyna, and Urszula ŁANGOWSKA-SZCZĘŚNIAK. “TRENDS IN POLISH HOUSEHOLD INCOME IN THE YEARS 1993-2005”. Economic and Environmental Studies 10 (December 16, 2020): 69–80. Accessed December 22, 2024. https://czasopisma.uni.opole.pl/index.php/ees/article/view/3090.