"bernewitz, m w. "
handbook for prospectors and operators of small mines: / m.w. bernewitz - 1 ed. - usa : mcgraw-hill 1943. - "x, 547p.; 18 cm."
TN270
handbook for prospectors and operators of small mines: / m.w. bernewitz - 1 ed. - usa : mcgraw-hill 1943. - "x, 547p.; 18 cm."
TN270