I really enjoyed reading Cost-Benefit Analysis: Theory and Application. I used this book to learn more about cost-benefit analysis (CBA) in tranportation planning, and albeit the book does not relate specifically to that field, it worked very well. The nice part is that it first discusses some macro-economical concepts before delving into cost-benefit calculations. This is very useful if you, like me, do not have a background, classes, courses or a degree in economics. As an introductory book this is excellent.