Emmons, William Harvey
The principles of economic geology - New York McGraw-hill Book Company 1918 - 606 p. ilus.
GEOLOGIA ECONOMICA
YACIMIENTOS MINERALES
553/E52
The principles of economic geology - New York McGraw-hill Book Company 1918 - 606 p. ilus.
GEOLOGIA ECONOMICA
YACIMIENTOS MINERALES
553/E52