5. Price Elasticity of Demand 6. Production Function : Returns to a Factor and Returns to Scale 7. Production Costs 8. Concepts of Revenue 9. Producer's Equilibrium : Meaning and Conditions 11. Elasticity of Supply 17. Concepts and Aggregates Related to National Income 18. Measurement of National Income 23. Aggregate Demand, Aggregate Supply and Related Concepts (Propensity to Consume, Propensity to Save and Investment) 25. Investment Multiplier and Its Mechanism
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