DREGER, M. Methane emissions in selected hard-coal mines of the Upper Silesian Coal Basin in 1997–2016. Geology, Geophysics and Environment, [S. l.], v. 45, n. 2, p. 121, 2019. DOI: 10.7494/geol.2019.45.2.121. Disponível em: https://ggae.agh.edu.pl/index.php/geol/article/view/3115. Acesso em: 21 nov. 2024.