@article {3742, title = {Distribution of Fallout and Natural Gamma Radionuclides in Litter, Humus and Surface Mineral Soil Layers under Natural Vegetation in Great-Smoky-Mountains, North-Carolina-Tennessee}, journal = {Health Physics}, volume = {18}, year = {1970}, pages = {479-489}, keywords = {Ecosystem, Soils}, author = {Ritchie, Jerry Carlyle and Clebsch, Edward E. C and Rudolph, W. K} }