Ostrowska-Tryzno, Anna, Wydział Turystyki i Rekreacji, Akademia Wychowania Fizycznego Józefa Piłsudskiego w Warszawie,Department of Tourism, Józef Piłsudski University of Physical Education in Warsaw,
E
Osuch-Rak, Ewa, Institute of Fundamental Technological Research, Polish Academy of Sciences
Osuch-Rak, Ewa, Institute of Fundamental Technological Research, Polish Academy of Science
A
Owczarczyk, Aleksandra, College of Individual Inter-disciplinary Studies, University of Silesia in Katowice