Biernat-Jarka, Agnieszka, and Natalia Wyszyńska. “SOURCES OF FINANCING THE PROTECTION OF THE ENVIRONMENT IN POLAND – CASE STUDY OF MAZOWSZE DISTRICT”. Acta Scientiarum Polonorum. Oeconomia 6, no. 4 (December 30, 2007): 5–12. Accessed May 2, 2024. https://aspe.sggw.edu.pl/article/view/859.