Vol. 246, Issue 5, 1948May 01, 1948 EDT
The Eocene of the San Juan Basin, New Mexico. Part 1
The Eocene of the San Juan Basin, New Mexico. Part 1
George Gaylord Simpson,
Simpson, G. G. (1948). The Eocene of the San Juan Basin, New Mexico. Part 1. American Journal of Science, 246(5), 257–282. https://doi.org/10.2475/ajs.246.5.257