Lectures on Political Economy - Volume II: Money
Knut Wicksell was a Swedish economist who had an enormous influence on Austrian economics and Ludwig von Mises. This might be his most compelling book: lectures delivered over the course of an entire career, covering both general and specific economics problems. This one-volume works actually consists of two volumes from the original, which has been long out of print. It is a fat 570 pages. All hail Wicksell!