This book contained some really great advices for surviving under some extreme situations. It deals with Arctic, desert, jungle and sea terrains but these advices can also be applied on camping.
It deals with some basic stuff a person must be able to do if he's found in the wilderness. These include orientation, finding water sources, food sources, providing first aid, building a shelter and much more.
I don't know if I'll ever need to use all the things contained in this book but it was a really good read and the things I learned deffinently worthed my time.