CZAJA, Stanisław; TUTAJ, Jerzy. Reasons for stagnation in river transport in Poland at the turn of the 20th and 21st centuries. Economics and Environment, Poland, v. 88, n. 1, p. 622, 2024. DOI: 10.34659/eis.2024.88.1.622. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/622.. Acesso em: 16 jul. 2024.