Vol. 237, Issue 11, 1939November 01, 1939 EDT
The Cost of Soil in Rock and Time
The Cost of Soil in Rock and Time
William Henry Twenhofel,
Twenhofel, W. H. (1939). The cost of soil in rock and time. American Journal of Science, 237(11), 771–780. https://doi.org/10.2475/ajs.237.11.771