Vol. 237, Issue 8, 1939August 01, 1939 EDT
“Archean Pseudo Ripple Mark in the Grand Canyon”
“Archean Pseudo Ripple Mark in the Grand Canyon”
John Haviland Maxson, Ian Campbell,
Maxson, J. H., & Campbell, I. (1939). “Archean pseudo ripple mark in the Grand Canyon.” American Journal of Science, 237(8), 606. https://doi.org/10.2475/ajs.237.8.606