摘要
20040977 Chi Shunliang (Seismological Bureau of Hebi, Henan) Discussion of Concentration of Radioelements in the Earth’s Crust(Earth Science-----Journal of China University of Geosciences, ISSN 1000-2383, CN 42 - 1233/P, 28(1), 2003, p. 17 - 20, 12 refs. , with English abstract) Key words: