Kałuża, Halina. “ECOLOGICAL EDUCATION FOR SUSTAINABLE DEVELOPMENT AS A GLOBAL AND REGIONAL CHALLENGE”. Acta Scientiarum Polonorum. Oeconomia 8, no. 2 (June 30, 2009): 61-68. Accessed December 23, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/3824.