Monopoly Oligopoly 11 Economics 10 Economic growth 3 Microeconomics 3 Consumer 2 Demand 2 Duopoly 2 Economic efficiency 2 International trade 2 Markets 2 Price discrimination 2 Supply 2 ART National income 1 Agricultural Economics 1 Agricultural policy 1 Agricultural trade 1 Banking 1 Biotechnology 1 Biotechnology (General), (Revised June 2002) 1 Business firm 1 Capital market 1 Capitalism 1 Collusion model 1 Collusive oligopoly 1 Commercial policy 1 Competition 1 Consumer Demand Theory 1 Consumer Surplus 1 Cost theory 1