Vol. 246, Issue 6, 1948June 01, 1948 EDT
The Eocene of the San Juan Basin, New Mexico; Part 2
The Eocene of the San Juan Basin, New Mexico; Part 2
George Gaylord Simpson,
Simpson, G. G. (1948). The Eocene of the San Juan Basin, New Mexico; Part 2. American Journal of Science, 246(6), 363–385. https://doi.org/10.2475/ajs.246.6.363