Columbia subject headings:
Commodity exchanges--Mathematical models.
Copper industry and trade--Mathematical models.
Economic stabilization--Mathematical models.
Speculation--Mathematical models.
Harvard subject headings:
Commodity exchanges--Mathematical models.
Copper industry and trade--Mathematical models.
Economic stabilization--Mathematical models.
Speculation--Mathematical models.
Princeton subject headings:
Commodity exchanges--Mathematical models.
Copper industry and trade--Mathematical models.
Economic stabilization--Mathematical models.
Speculation--Mathematical models.