Six Possible Pairs of Food￾Machines Production Levels

The Production Possibilitiesin a Graph

Pollution and Economic Growth

Cost Curves for a Natural Monopolist

Government’s Share of the Economy Has Grown Sharply in This Century

American Production Data

Inputs, Production, Outputs, and Consumption Form the Circular Flow of Economic Life

Fixed Land Must Work for Whatever It Can Earn

Wages Have Improved as Hours of Work Have Declined

The Share of Labor in National Income