Theory of demand Break even analysis 1 Collusive oligopoly 1 Factor pricing 1 General equilibrium and welfare Economics 1 Linear programming and input-output analysis 1 Microeconomics 1 Monopoly 1 Oligopoly 1 Perfect competition 1 Product pricing 1 Saving and investment 1 Scope and methodology of Economics 1 Theory of distribution 1 Theory of product pricing 1 Theory of production and cost 1 Theory of supply 1 Welfare economics 1 production 1