Origin of atmospheric argon and the radioactive decay constants of potassium-40.
D001128:Argon; D006801:Humans; D011188:Potassium; D011197:Potassium Radioisotopes; D011851:Radioactivity
D011197:Potassium Radioisotopes; D001128:Argon; D011188:Potassium
ARGON; POTASSIUM, RADIOACTIVE