Distribution of thorium, uranium, and potassium in ignous rocks of the boulder batholith region, Montana, and its bearing on radiogenic heat production and heat flow: shorter contributions to general geology - Tilling, Robert I.; Gottfried, David; United States. Department of Interior (Washington, D.C. : United States Government Printing Office, 1969)
Includes bibliography
Keywords: Rocks -- Igneous; Uranium -- Ignous rocks