Columbia subject headings:
Business enterprises--Taxation--United States.
Corporations--Taxation--United States.
Income tax--United States.
Tax administration and procedure--United States.
Harvard subject headings:
Corporations--Taxation--United States.
Income tax--United States.
Tax administration and procedure--United States.
Princeton subject headings:
Corporations--Taxation--United States.
Income tax--United States.
Tax administration and procedure--United States.