Annotated record and radium content of the detailed examination of manganese ...

The radioactivity of bottom sediments has been but little investigated. Data published by Joly, Pettersson, Piggot and Iimori refer to determinations of radium, contained mainly...底部沉积物的放射性研究尚属鲜见。乔利（Joly）、佩特松（Pettersson）、皮戈特（Piggot）与伊莫里（Iimori）已发表的数据，主要针对沉积物中所含镭的测定展开……