Economic geology
Ries, Heinrich
Economic geology by H. Ries ... - 7th ed. - New York London J. Wiley & Sons, inc. Chapman & Hall, limited 1937. - vii, 720 p. illus., maps (1 double) diagrs. 24 cm.
Includes "References."
37031905
Geology, Economic.
Mines and mineral resources--United States.
TN23 / .R53 1937
553
Economic geology by H. Ries ... - 7th ed. - New York London J. Wiley & Sons, inc. Chapman & Hall, limited 1937. - vii, 720 p. illus., maps (1 double) diagrs. 24 cm.
Includes "References."
37031905
Geology, Economic.
Mines and mineral resources--United States.
TN23 / .R53 1937
553