Stratigraphic relationships of the Shafer limestone, San Juan County, Utah - Mattox, Richard Benjamin,; Brand, John Paul, ([Lubbock], Museum, Texas Tech University, 1974, 1974)
https://www.biodiversitylibrary.org/bibliography/142957
Keywords: From 230 to 280 million years ago|Geology|Geology; Stratigraphic|Permian|Permian Geologic Period|San Juan County|Utah|