Many books have been written about Intellectual Capital and related topics. However, I have a feeling that most of the truly pioneering books were written in the 1990s. Until now that is. If you are interested in how to build companies in the 21st Century, I recommend you to read "Intangible Capital" by Mary Adams and Mike Oleksak.
Their book delivers many fresh insights, and in particular, practical tools and guidelines for how you can navigate your company successfully in the Knowledge Economy.
You can read more about it here: http://bit.ly/dgNiHi