RAJCHEL, Dariusz, and Sabina KAUF. 2020. “THE LEVEL OF TECHNICAL INFRASTRUCTURE IN THE OPOLE REGION AS A DETERMINANT OF THE DEVELOPMENT AND COMPETITIVENESS OF RURAL AREAS”. Economic and Environmental Studies 6 (December):137-51. https://czasopisma.uni.opole.pl/index.php/ees/article/view/3106.