Yep. Olsen's book is about living off the land in the American West. There are, however, many techniques (as well as the mind set) that are applicable in any ecology.

It's the only book I've found so far (and I did not do an exhaustive search) that starts with the basics - your brain and fingers - and helps you think about how to use the materials provided in nature to survive.

Just as learning to be a neurosurgeon isn't taught in a single text, survival must be learned from a variety of sources. Olsen's book is a "Survival 101" kind of book.