SCHUCHERT, CHARLES.
Outlines of historical geology, by Charles Schuchert & Carl O. Dunbar. 4th ed.
SCHUCHERT, CHARLES. Outlines of historical geology, by Charles Schuchert & Carl O. Dunbar. 4th ed. © 24Sep41; A157379. Carl O. Dunbar (A); 16Jul69; R465771.
Carl O. Dunbar|A