Szczepaniak, Iwona. “Development of Intra-Industry Trade As a Measure of Competitiveness of the Polish Food Sector”. Oeconomia Copernicana 4, no. 2 (February 18, 2014): 147–164. Accessed May 29, 2024. https://apcz.umk.pl/OeC/article/view/OeC.2013.018.