Amazon.com description: Product Description: Presenting the fundamentals of microeconomics, the Fourth Edition retains the strengths of the previous editions, but now integrates economic principles with their policy implications, in many cases using a specific illustration to introduce an abstract idea. Naturally, the authors emphasize the importance of ``switching'' in explaining demand and supply; however, it goes beyond most others to provide more detail and tighter explanation of what the aggregate demand and aggregate supply curves look like and why, making an introduction to macroeconomics much easier. In addition, the Fourth Edition places a greater emphasis on the international aspects of modern economies. Includes examples, applications, graphs, table, and exercises.