Vol. s5-33, Issue 198, 1937June 01, 1937 EDT
Age of the Exshaw Shale in the Canadian Rockies
Age of the Exshaw Shale in the Canadian Rockies
Percival Sidney Warren,
Warren, P. S. (1937). Age of the Exshaw Shale in the Canadian Rockies. American Journal of Science, s5-33(198), 454–457. https://doi.org/10.2475/ajs.s5-33.198.454