"Even more impressive than the speed with which this monograph was created, is the breadth of issues that is covered and the wealth of results that is derived and synthesized. For anyone thinking about trade, tax, and regional policies, it is required reading."--Michael Pfluger, Journal of Economic Geography "The impressive efforts by Baldwin et al. to construct various [New Economic Geography] inspired models that are more easily tractable and perfectly solvable may inspire increased efforts to test these models empirically, which will further aid in a more robust empirical identification of the driving forces of firm location behavior and related regional welfare issues."--Jacob A. Jordaan, Progress in Human Geography