青岛地区地表天然放射性调查
徐磊, 夏宁, 姜学钧
INVESTIGATION AND ASSESSMENT OF NATURAL RADIOACTIVITY OF GROUND SURFACE IN QINGDAO AREA
XU Lei, XIA Ning, JANG Xue-jun
J4 . 2011, (4): 773 -778 .  DOI: 10.11869/hnxb.2011.04.0773