Columbia subject headings:
Input-output analysis--United States.
Input-output analysis.
Mineral industries--United States.
Mineral industries.
Harvard subject headings:
Input-output analysis--United States.
Input-output analysis.
Mineral industries
Mineral industries--United States
Nonfuel minerals industry--United States.
Princeton subject headings:
Input-output analysis--United States.
Input-output analysis.
Mineral industries--United States.
Mineral industries.