Vol. s5-9, Issue 50, 1925February 01, 1925 EDT
Radioactive Minerals as Geological Age Indicators
Radioactive Minerals as Geological Age Indicators
H. V. Ellsworth,
Ellsworth, H. V. (1925). Radioactive minerals as geological age indicators. American Journal of Science, s5-9(50), 127–144. https://doi.org/10.2475/ajs.s5-9.50.127