Columbia subject headings:
International trade--Data processing.
U.S. Customs Service--Data processing.
United States Customs Service--Data processing.
Year 2000 date conversion (Computer systems)--United States.
Harvard subject headings:
International trade--Data processing.
U.S. Customs Service--Data processing.
Year 2000 date conversion (Computer systems)--United States
Princeton subject headings:
International trade--Data processing.
U.S. Customs Service--Data processing.
Year 2000 date conversion (Computer systems)--United States.