Physical activity after compulsory physical education classes in the opinion of the students from selected secondary schools in Bydgoszcz

SZARK-ECKARDT, Mirosława - ŻUKOWSKA, Hanna. Physical activity after compulsory physical education classes in the opinion of the students from selected secondary schools in Bydgoszcz. In Aktuálne problémy telesnej výchovy a športu IV. : zborník vedeckých prác. 1. vyd. - Ružomberok : VERBUM - vydavateľstvo Katolíckej univerzity v Ružomberku, 2015. ISBN 978-80-561-0209-1, cD-ROM, s. 195-206.