The best book on worms is Organic Growing With Worms, published by
Penguin. I am the Author, David Murphy. 230+ pages with
illustrations on Worms for Everyone; Worms for Farmers; Worms for Worm
Farmers; Worms for Waste Managers; Worms for Gardeners; Worms for
Greenhouse. Includes aspects such as the dangers of worm farming - and
there are real environmental dangers for the unwary.
Cost AU$40 by air. email@example.com