Columbia subject headings:
Balance of payments--Data processing.
Balance of payments--Italy--Data processing.
Balance of payments--Italy--Mathematical models.
Balance of payments--Mathematical models.
Harvard subject headings:
Italy--Economic conditions--1945---Mathematical models.
Princeton subject headings:
Balance of payments--Data processing.
Balance of payments--Italy--Data processing.
Balance of payments--Italy--Mathematical models.
Balance of payments--Mathematical models.