Columbia subject headings:
Mineral industries--Periodicals.
Mineral industries--Statistics--Periodicals.
Mineral industries--United States--Periodicals.
Mineral industries--United States--Statistics--Periodicals.
Harvard subject headings:
Princeton subject headings:
Mineral industries--Periodicals.
Mineral industries--Statistics--Periodicals.
Mineral industries--United States--Periodicals.
Mineral industries--United States--Statistics--Periodicals.
Periodicals.
Statistics.