The first edition was called exchange and production of cours universear economics. It's 700, forty plus pages. The only thing i don't like about it is it has the answers to the questions which i don't think alchen maby would have liked. But for what it's worth, ah, but that book, awasi, was a very people asked me all the time, i want to learn more Economics. And the answer is, there really aren't text books to read because text books are not written to be read. They're often written to be used as a reference in a glass where there's a lecture.