Some people like the idea of producing their own food. They want to grow a garden or raise animals, or otherwise provide for themselves. Others are 'preppers' and have been buying and storing food in case of disaster, hardship, or other turmoil. It's a great plan, but knowing how to produce your own food is real security. Hand in hand with that is knowing what you'll need to produce, preserve, and store that food.This books is about the numbers. It's...