[Automatic measurement of radon in soil gas for earthquake prediction (author's transl)].
D004190:Disasters; D005618:Fresh Water / Q000032:analysis; D005740:Gases / Q000032:analysis*; D011874:Radiometry / Q000295:instrumentation; D011886:Radon / Q000032:analysis*; D012987:Soil / Q000032:analysis*
D005740:Gases; D012987:Soil; D011886:Radon