Determination of half value layer with Pb and  60 Co.
D003036:Cobalt Isotopes; D004497:Education, Dental; D006207:Half-Life; D006801:Humans; D007854:Lead; D011835:Radiation Protection; D011868:Radioisotopes; D013995:Time
D003036:Cobalt Isotopes; D011868:Radioisotopes; D007854:Lead