Baumol, W. J. (1988). Economics: Principles and policy (4ª ed.). Harcourt Brace Jovanovich.
Tohutoru Kātū ChicagoBaumol, William J. Economics: Principles and Policy. 4ª ed. San Diego: Harcourt Brace Jovanovich, 1988.
Tohutoro MLABaumol, William J. Economics: Principles and Policy. 4ª ed. Harcourt Brace Jovanovich, 1988.
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