Finlay, James Ralph
The cost of mining: a discussion of the production of minerals with remarks on the geologic, social and economic foundations upon which it rests - 3a ed. - New York McGraw-Hill Publishing Company 1920 - 532 p.
ASPECTOS ECONOMICOS
COSTOS
MINERIA
A/622.02/F54
The cost of mining: a discussion of the production of minerals with remarks on the geologic, social and economic foundations upon which it rests - 3a ed. - New York McGraw-Hill Publishing Company 1920 - 532 p.
ASPECTOS ECONOMICOS
COSTOS
MINERIA
A/622.02/F54
