Columbia subject headings:
Harvard subject headings:
Tax administration and procedure--United States.
Tax collection--United States.
United States. Internal Revenue Service--Automation.
United States. Internal Revenue Service--Data processing.
United States. Internal Revenue Service--Management.
Princeton subject headings:
Tax administration and procedure--United States.
Tax collection--United States.
United States. Internal Revenue Service--Automation.
United States. Internal Revenue Service--Data processing.
United States. Internal Revenue Service--Management.