Columbia subject headings:
Classical school of economics.
Competition.
Industrial concentration.
Marxian economics.
Monopolies.
Pricing.
Profit.
Harvard subject headings:
Classical school of economics.
Competition.
Industrial concentration.
Marxian economics.
Monopolies.
Pricing.
Profit.
Princeton subject headings:
Classical school of economics.
Competition.
Industrial concentration.
Marxian economics.
Monopolies.
Pricing.
Profit.