Konieczny, Sławomir. “ECONOMIC AND TECHNICAL ANALYSIS OF POSSIBILITY OF USE SOLID BIOFUEL IN POLAND”. Acta Scientiarum Polonorum. Oeconomia 1, no. 1 (June 30, 2002): 93-103. Accessed December 23, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/3589.