Comments on "Gamma-ray activity in bituminous, subbituminous and lignite coals," by D.E. Barber and H.R. Giorgio.
D000398:Air Pollution, Radioactive; D003031:Coal; D005720:Gamma Rays; D008452:Maximum Allowable Concentration; D011210:Power Plants; D011839:Radiation, Ionizing; D013910:Thorium; D006113:United Kingdom; D014501:Uranium
D003031:Coal; D014501:Uranium; D013910:Thorium