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Gospodarka Narodowa > 2016 > 1 > 73-91
Gospodarka Narodowa. The Polish Journal of Economics > 2016 > 281 > 1 > 73-97
Labor et Educatio > 2013 > 1 > 75-87
Gospodarka Narodowa > 2016 > 1 > 73-91
Gospodarka Narodowa. The Polish Journal of Economics > 2016 > 281 > 1 > 73-97
Labor et Educatio > 2013 > 1 > 75-87