GRALAK, A. THE LEVEL OF COMPETITIVENESS OF EASTERN REGIONS OF POLAND ON BACKGROUND OF THE DIFFERENTIATIONS BETWEEN REGIONS. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 4, n. 1, p. 71–83, 2005. Disponível em: https://aspe.sggw.edu.pl/article/view/943. Acesso em: 14 may. 2024.