I read far enough in this book to know that I need to study it, learn it, memorize it.
Schofield's book is a great addition to any apocalypse-preparedness library. It covers edible species of plants that grow in the wild (and in urban areas).
Discovering Wild Plants describes how to find edibles, when to harvest them, how to prepare them, and what they'll do for you in terms of nutrition, wellness, and healing.
This book is the standard in wild edibles if you live in Washington state, and it's required reading for students of Alderleaf Wilderness College ([...]).
It's a shame that this book is out of print. Count yourself lucky if you manage to snag a reasonably-priced used copy. I'm still looking for mine, and borrowing constantly from the library in the meantime.