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Polish Journal of Management Studies > 2021 > Vol. 24, No. 2 > 449--467
Management > 2014 > 18 > 2 > 175-190
Management > 2013 > 17 > 1 > 46-57
Medycyna Weterynaryjna > 2013 > 69 > 12
Barometr Regionalny. Analizy i prognozy > 2013 > 3(33) > 81-90
Management > 2013 > Vol. 17, no. 1 > 47--58
Intercathedra > 2010 > 26
Polish Journal of Environmental Studies > 2009 > 18 > 3 > 513-519
Polish Journal of Ecology > 2007 > 55 > 4