Ostrowska-Tryzno A, Pawlikowska-Piechotka A. Tourism, the hotel industry at the time of the COVID-19 pandemic . Sport tur. [Internet]. 2022 Jul. 28 [cited 2024 Apr. 20];5(2):139-52. Available from: https://czasopisma.ujd.edu.pl/index.php/sport/article/view/1610