Polish Journal of Sport and Tourism
Polish Journal of Sport and Tourism > 2012 > 19 > 4 > 256-262
Polish Journal of Sport and Tourism > 2015 > 21 > 2 > 119-126
Polish Journal of Sport and Tourism > 2012 > 19 > 4 > 256-262
Polish Journal of Sport and Tourism > 2015 > 21 > 2 > 119-126