Principles of economic geology
Emmons, William Harvey
Principles of economic geology - 2nd ed. - New York: McGraw-Hill Book Company Inc, 1940 - xix, 529p.
Economic geology
Hypothermal deposits
553 / H0
Principles of economic geology - 2nd ed. - New York: McGraw-Hill Book Company Inc, 1940 - xix, 529p.
Economic geology
Hypothermal deposits
553 / H0