Medicine for the Outdoors is the work of Dr. Paul Auerbach, wilderness medicine pioneer and arguably the world’s foremost expert on the subject. He explains the how and why of responding to nearly every possible illness or injury one is likely to encounter in a concise, step by step manner that is intended to be used on the spot - but don’t wait for something to happen before you read the book....
I have a Kindle copy that I can carry on a smartphone, iPod or similar device. I also have a copy of the book that lives in our troop first aid kit...