Note 11 — Chapter IV · MINERAL RESOURCES—SOME GENERAL QUANTITATIVE CONSIDERATIONS
Reading edition
Spurr, J. E., Who owns the earth?: Eng. and Min. Jour., vol. 109, 1920, pp. 389-390.
Reading edition
Spurr, J. E., Who owns the earth?: Eng. and Min. Jour., vol. 109, 1920, pp. 389-390.