Columbia subject headings:
Tax administration and procedure--United States--Data processing.
United States. Internal Revenue Service--Data processing.
United States. Internal Revenue Service--Information resources management.
Harvard subject headings:
Tax administration and procedure--United States--Data processing.
United States. Internal Revenue Service--Data processing.
United States. Internal Revenue Service--Information resources management.
Princeton subject headings:
Tax administration and procedure--United States--Data processing.
United States. Internal Revenue Service--Data processing.
United States. Internal Revenue Service--Information resources management.