Introductory mining engineering
Hartman, Howard L.
Introductory mining engineering - - New York : John Wiley, 1987 1987 - xiii,633 p. 22 cm - .
0-471-62804-227
Mining engineering
622 Har(2)
Introductory mining engineering - - New York : John Wiley, 1987 1987 - xiii,633 p. 22 cm - .
0-471-62804-227
Mining engineering
622 Har(2)