1. Density distribution and constitution of the mantle;Clark;Rev. Geophys.,1964
2. Abundances of uranium, thorium and potassium;Clark;Geol. Soc. Am. Mem.,1966
3. The Pre-Cambrian of part of the south coast of Western Australia;Clarke;J. Roy. Soc. W. Aust.,1954
4. Radioactive elements in the continental crust;Heier;Nature,1965
5. Metamorphism and the chemical differentiation of the crust;Heier;Geol. Foren. Stockholm, Forhandl.,1965