Cieślik, E., Siembida, A., Kościej, A., & Górecki, A. (2014). Adventure Tourism in the Surveyed Polish Adventure Tourists’ Opinion - Outline of the Problem. Journal of Agribusiness and Rural Development, 34(4), 53-67. Retrieved from http://www1.up.poznan.pl/jard/index.php/jard/article/view/463