Columbia subject headings:
Harvard subject headings:
Customs appraisal--Law and legislation--United States--Criminal provisions.
Tariff--Law and legislation--United States--Criminal provisions.
Tax auditing--United States.
Tax returns--United States.
Trading companies--Taxation--United States.
U.S. Customs Service.
Princeton subject headings:
Tax auditing--United States.
Trading companies--Taxation--United States.
U.S. Customs Service.