title: Measurement of the radioactivity of natural waters.
mesh_terms: D007854:Lead; D008722:Methods; D011194:Potassium Isotopes; D011868:Radioisotopes; D012384:Rome; D014878:Water Pollution, Radioactive / Q000032:analysis*
chemical_list: D011194:Potassium Isotopes; D011868:Radioisotopes; D007854:Lead