Exploration and development of small mines.
Krumlauf, Harry Eugene, 1901-
Exploration and development of small mines. - Tucson, University of Arizona, 1954. - 34 p. illus., tables. - Arizona. [State] Bureau of Mines. Bulletin no. 164 Mineral technology series, no. 48 University of Arizona bulletin, v. 25, no. 1 . - University of Arizona. State Bureau of Mines. Bulletin ; 164. .
gs 54000317
Mining engineering.
TN153 / .K7
MN 1.3:B 85/164
Exploration and development of small mines. - Tucson, University of Arizona, 1954. - 34 p. illus., tables. - Arizona. [State] Bureau of Mines. Bulletin no. 164 Mineral technology series, no. 48 University of Arizona bulletin, v. 25, no. 1 . - University of Arizona. State Bureau of Mines. Bulletin ; 164. .
gs 54000317
Mining engineering.
TN153 / .K7
MN 1.3:B 85/164