Váczi, P.; Müller, A.; Bácsné Bába, Éva. EFFECT OF COVID-19 CORONAVIRUS ON MAJOR NORTH EFFECT OF COVID-19 CORONAVIRUS ON MAJOR NORTH AMER-ICAN SPORTS LEAGUESAMER-ICAN SPORTS LEAGUES. ACR 2021, 11 (1), 157-166. https://doi.org/10.33032/acr.2587.