Polish Journal of Sport and Tourism
Polish Journal of Sport and Tourism > 2012 > 19 > 1 > 46-51
Polish Journal of Sport and Tourism > 2012 > 19 > 3 > 190-195
Polish Journal of Sport and Tourism > 2012 > 19 > 1 > 46-51
Polish Journal of Sport and Tourism > 2012 > 19 > 3 > 190-195