Natural radioactive level in raw coal of coal mines in some regions of China
WANG Jiaying, MA Kui, LI Yuwen, CHEN Fei, TONG Linquan, ZHANG Zhen
Chinese Journal of Radiological Health . 2022, (4): 424 -427,447 .  DOI: 10.13491/j.issn.1004-714X.2022.04.007