Gralak, Arkadiusz. “THE LEVEL OF COMPETITIVENESS OF EASTERN REGIONS OF POLAND ON BACKGROUND OF THE DIFFERENTIATIONS BETWEEN REGIONS”. Acta Scientiarum Polonorum. Oeconomia 4, no. 1 (June 30, 2005): 71–83. Accessed May 14, 2024. https://aspe.sggw.edu.pl/article/view/943.