US Army Survival Manual
I remember browsing through this book a few years ago at Barnes & Nobles and having a hard time putting it down. It tells you how to make a shelter, find food, kill animals and most importantly how to psychologically assess the individuals in a group of survivors. This way you can see who most likely won't make it. Or who will be the most problematic. (You know, the consistent whiner or crier or overly agitated and aggressive) What if you were to say obsessively eat pine cones and rub straw in your hair, like I would probably do.