Columbia subject headings:
Government lending--United States.
Grants-in-aid--United States.
Public contracts--United States.
Tax expenditures--United States.
Trade regulation--United States.
Harvard subject headings:
Government lending--United States
Grants-in-aid--United States.
Public contracts--United States.
Tax expenditures--United States.
Trade regulation--United States
Princeton subject headings:
Government lending--United States.
Grants-in-aid--United States.
Public contracts--United States.
Tax expenditures--United States.
Trade regulation--United States.