[1]
M. . Kordowska, “TOURISM ECOSYSTEM SERVICES – AN EXAMPLE OF BIRDWATCHING AT NATURE 2000 SITES”, EiS, vol. 60, no. 1, p. 11, Jan. 2017, Accessed: Apr. 19, 2025. [Online]. Available: https://ekonomiaisrodowisko.pl/journal/article/view/243