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Horyzonty Wychowania > 2018 > 17 > 44 > 59-71
Horyzonty Wychowania > 2016 > 15 > 35 > 73-91
Horyzonty Wychowania > 2014 > 13 > 26 > 209-230
Journal of Teacher Education for Sustainability > 2013 > 15 > 2 > 52-66
South East European Journal of Economics and Business > 2012 > 7 > 2 > 149-157