Investigation on the radioactive level of Strontium-90 in aerosol of Qingdao Dengying from 2015 to 2018
QU Xunshuai, REN Xiaojie, WANG Yi
中国辐射卫生 . 2019, (6): 688 -690,694 .  DOI: 10.13491/j.issn.1004-714x.2019.06.024