Kisiała, Wojciech, and Maria Trojanek. “THE CLASSIFICATION OF POLISH MUNICIPALITIES ACCORDING TO INCOME FROM REAL ESTATE”. Acta Scientiarum Polonorum Administratio Locorum 16, no. 2 (June 30, 2017): 77–85. Accessed May 3, 2024. https://czasopisma.uwm.edu.pl/index.php/aspal/article/view/463.