Hugh N. Frenzel books & textbook
The Permian Rocks of the Trans-Pecos Region, Guidebook, Field Trip No. 4, November 6-9, 1949.
John Emery Adams Norman D. Nevell Neil H. Wills Hugh N. Frenzel Mary Louise Rhodes
West Texas Geological Society /1949-01-01 Paperback / 94 Pages
