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Polish Journal of Sport and Tourism > 2015 > 21 > 4 > 234-239
Annales Academiae Medicae Silesiensis > 2011 > 65 > 1-2 > 13–19
Polish Journal of Sport and Tourism > 2015 > 21 > 4 > 234-239
Annales Academiae Medicae Silesiensis > 2011 > 65 > 1-2 > 13–19