Hoskins, J. R.
Mineral industry costs / compiled by J.R. Hoskins. - Spokane : Northwest Mining Associations, 1982. - 248 p. : ill.
Mineral industries--Costs.
Mineral industries--Economic aspects.
Mineral industry costs / compiled by J.R. Hoskins. - Spokane : Northwest Mining Associations, 1982. - 248 p. : ill.
Mineral industries--Costs.
Mineral industries--Economic aspects.