Polish Journal of Sport and Tourism
Polish Journal of Sport and Tourism > 2013 > 20 > 4 > 249-253
Polish Journal of Sport and Tourism > 2015 > 22 > 1 > 3-8
Polish Journal of Sport and Tourism > 2013 > 20 > 4 > 249-253
Polish Journal of Sport and Tourism > 2015 > 22 > 1 > 3-8