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Progress in Economic Sciences > 2015 > 2 > 15-32
Progress in Economic Sciences > 2014 > 1 > 303-319
Handel Wewnętrzny > 2016 > 6 (365) > 181-196
Progress in Economic Sciences > 2015 > 2 > 15-32
Progress in Economic Sciences > 2014 > 1 > 303-319
Handel Wewnętrzny > 2016 > 6 (365) > 181-196