30家医疗机构放射防护问题与对策
李善辉
The Problems and Countermeasures for the Radiological Protection of 30 Medical Institutions
LI Shan-hui
中国辐射卫生 . 2016, (3): 294 -296 .  DOI: 10.13491/j.cnki.issn.1004-714x.2016.03.012