The acidifying gases emission in Cara - Severin county, Romania, in the period of 1997-2006. African Journal of Geography and Regional Planning, [S. l.], v. 5, n. 1, p. 1–9, 2018. Disponível em: https://ijpp.org/journal/index.php/AJGRP/article/view/375. Acesso em: 11 oct. 2025.