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W Economic sectors > W.00 Economic sectors > Economic structure > Market structure > Oligopoly

V Economics > V.02 Microeconomics > V.02.02 Theory of the firm > Market structure > Oligopoly

V Economics > V.10 Industrial organization > V.10.01 Market theory and competition > Market structure > Oligopoly

V Economics > V.10 Industrial organization > V.10.01 Market theory and competition > Oligopoly