(1)
Determination of the Activity Concentration of 226Ra, 232Th, 40K and the Concentration of 222Rn in Soil Samples of the Campos Gerais Region (ParanĂ¡). Braz. J. Rad. Sci. 2021, 9 (1A). https://doi.org/10.15392/bjrs.v9i1A.1240.