This book, drawn from the Global Trade Analysis Project (GTAP), aims to help readers conduct quantitative analysis of international trade issues in an economy-wide framework. In addition to providing a succinct introduction to the GTAP modelling framework and data base, this book contains seven of the most refined GTAP applications undertaken to date, covering topics ranging from trade policy to the global implications of environmental policies, factor accumulation and technological change. The authors of the applications are representative of the broader group of GTAP users. Some are academics, while others are professional economists in national and international agencies. All of their studies can be independently replicated by the reader through accessing software and files via the Internet. Readers can also explore the sensitivity of results to varying assumptions and use the applications to launch independent research projects.