This seems like a good thread to ask: Does anyone know any good economics book focusing on regional differences in inflation, and the effects of that on economic growth in each region? I'm specifically interested in cases where the regions all share a common currency.

I remember reading a book about this many years ago (Bastiat maybe?) which I'm pretty sure was French, since it focused on differences between the metropole and the colonies, but I'm hoping to find something a little more modern. I would be interested in a book from any time period, however, so please respond if you know of one.