Ehlers, George M and Robert V Kesling (1 results)

Softcover. Condition: Fine. B & W and maps; 8 x 10"; 130 pages; EXTREMELY SCARCE TITLE! ! ! ! Soft cover has slight rubbing. Pages are clean and tight; appears as if unused. Copiously illustrated with b/w drawings, maps, photographs, diagrams and charts. Dr. Ehlers was a prolific author, American geologist; Professor of Geology;…