Riso, Eva-Maria, juhendajaUdras, Grete2020-09-182020-09-182019http://hdl.handle.net/10062/69585estopenAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/ee/magistritöödEesti kooliõpilaste liikumisaktiivsus erinevates kooliastmetes. Physical activity in Estonian schoolchildren of different school levelsThesis