Warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time in E:\WWW\ager\ager\lib\pkp\classes\session\SessionManager.inc.php on line 71

Ma, Haoming, et al. “Outlook for the Coal Industry and New Coal Production Technologies”. Advances in Geo-Energy Research, vol. 5, no. 2, Mar. 2021, pp. 119-20, doi:10.46690/ager.2021.02.01.