ANALYSIS OF COMPETITION ON THE CONCRETE MARKET BASED ON STRATEGIC MAPS GROUPS. Research Bulletins of the Faculty of Economic Sciences, [S. l.], v. 1, n. 21, p. 245–262, 2018. Disponível em: https://ezeszyty.wne.tu.koszalin.pl/index.php/zeszyty/article/view/83. Acesso em: 20 jul. 2025.