concentrator methods and costs at the hayden plant of the nevada consolidated copper co. (arizona). us bureau of mines information circular #6241
Garms, W. I.
Wash;: USGPO, 1930.. 25pp Very good (Item ID: 17804)
$10.00
Wash;: USGPO, 1930.. 25pp Very good (Item ID: 17804)
$10.00