1. The 222Rn content of groundwater in strata of the Plio-Pleistocene Osaka Group in the Sennan area, Japan;Fukui;J. Hydrol.,1983
2. Transport of radon which diffuses from uranium mill tailings;Goldsmith,1980
3. Radon-222 in potable water supplies in Maine: The geology, hydrology, physics and health effects;Hess,1979
4. Studies on earthquake prediction in the eastern part of Tokai District — On automatic observations of radon concentration in groundwater;Ikeda;Bull. Geol. Surv. Japan,1981
5. Influence of 222Rn concentration under the ground on natural gamma-ray flux density and exposure rate;Kataoka;Health Phys.,1979