Books on Medical Emergencies.?

I plan on going into the medical field and I really enjoy reading books that have to involve the medical field. I would live to read a book about medical emergencies like heart attacks, diabetic emergencies, choking, hypothermia, dehydration, drowning, wounds and bleeding, neck and spinal injuries, abdominal injuries, fractures, infectious diseases, overdoses, poisoning. I have things that give you like one instruction then just tell you to call 911. And I dont want that. I want to know what to do in that situation when I can't get help. If you know of any books like that please tell! Thanks