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Polish Journal of Sport and Tourism > 2013 > 20 > 1 > 68-72
Polish Journal of Sport and Tourism > 2013 > 20 > 1 > 68-72
Human Movement > 2009 > 10 > 2 > 109-115
Human Movement > 2009 > 10 > 2 > 109-115
Polish Journal of Sport and Tourism > 2013 > 20 > 1 > 68-72
Polish Journal of Sport and Tourism > 2013 > 20 > 1 > 68-72
Human Movement > 2009 > 10 > 2 > 109-115
Human Movement > 2009 > 10 > 2 > 109-115