Columbia subject headings:
Income tax--Law and legislation--Belgium.
Income tax--Law and legislation--Canada.
Income tax--Law and legislation--France.
Income tax--Law and legislation--Germany (West)
Income tax--Law and legislation--Great Britain.
Income tax--Law and legislation--Italy.
Income tax--Law and legislation--Switzerland.
Income tax--Law and legislation--United States.
Harvard subject headings:
Income tax--Italy--Law.
Income tax--Law and legislation--Belgium.
Income tax--Law and legislation--Canada.
Income tax--Law and legislation--France.
Income tax--Law and legislation--Germany (West)
Income tax--Law and legislation--Great Britain.
Income tax--Law and legislation--Switzerland.
Income tax--Law and legislation--United States.
Princeton subject headings: