GRZEBYK, M., STEC, M. and STEC, B. (2025) “AN EVALUATION OF THE IMPLEMENTATION OF SUSTAINABLE DEVELOPMENT GOAL 7 IN EUROPEAN UNION COUNTRIES IN 2013 AND 2022 USING THE WARD’S METHOD”, Humanities and Social Sciences, 32(1), pp. 47-59. doi: 10.7862/rz.2025.hss.04.