Polish Journal of Sport and Tourism
Polish Journal of Sport and Tourism > 2013 > 20 > 3 > 205-210
Polish Journal of Sport and Tourism > 2013 > 20 > 4 > 269-273
Polish Journal of Sport and Tourism > 2013 > 20 > 3 > 205-210
Polish Journal of Sport and Tourism > 2013 > 20 > 4 > 269-273