Title: Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1970
First published: 1971
Subjects: Geology, Stratigraphic, Nomenclature, Stratigraphic Geology
Places: Bedford County, Glass Mountains, Pennsylvania, Texas, United States
LC classification: QE75 .B9 no. 1354-A, QE651 .B9 no. 1354-A