title: An environmental gamma ray dosimeter using CaSO4; Dy Teflon TLD discs.
mesh_terms: D002133:Calcium Sulfate; D004419:Dysprosium; D005720:Gamma Rays; D011138:Polytetrafluoroethylene; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*
chemical_list: D004419:Dysprosium; D011138:Polytetrafluoroethylene; D002133:Calcium Sulfate