Principles of economics, Seventh Edition, continues to be the most popular and widely-used text in the economics classroom. A text by a superb writer and economist that stresses the most important concepts without overwhelming students with an excess of detail. A thorough update has been made to keep all chapters fresh and relevant with current Economic coverage. The seventh edition premier ancillary package is the most extensive in the industry, using a team of instructors/preparers that have been with the project since the first edition.