Outlines of geology. Being a combination of outlines of physical geology, by Chester R. Longwell ... Adolph Knopf ... and Richard R. Flint ... and outlines of historical geology, third edition ... rewritten, by Charles Schuchert ... and Carl O. Dunbar.
Longwell, Chester Ray.
Knopf, Adolph.
Flint, Richard R.
Schuchert, Charles.
Dunbar, Carl O.
New York & London, 
1937.