Introductory mining engineering
Hartman , Howard L
Introductory mining engineering Howard L. Hartman - New York Wiley & Sons 1987 - 633 p. : ill. ; 25 cm.
0471820040
Mining engineering
Introductory mining engineering Howard L. Hartman - New York Wiley & Sons 1987 - 633 p. : ill. ; 25 cm.
0471820040
Mining engineering
