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Journal of Entrepreneurship, Management and Innovation > 2014 > 10 > 1 > 79-108
Nauki Społeczne > 2013 > 1(7) > 7-27
Journal of Entrepreneurship, Management and Innovation > 2014 > 10 > 1 > 79-108
Nauki Społeczne > 2013 > 1(7) > 7-27