TY - GEN A1 - Majewska, Karolina PB - Akademia Wychowania Fizycznego w Poznaniu L2 - http://wbc.poznan.pl/Content/7373 KW - motivation KW - recreation KW - tennis KW - sailing T1 - Reasons for undertaking recreational activity on the example of selected forms of physical recreation UR - http://wbc.poznan.pl/dlibra/publication/edition/7373 ER -