"Profitable Earthworm Farming" by Charlie Morgan. A comprehensive treatise by a research biologist, who is also a practical earthworm breeder; a detailed scientific study of earthworm biology, history, and reproductive processes.  Also includes information on raising mealworms, crickets, and grasshoppers.  The information is a littel dated but still very valuable for every worm farmer.

Includes:
1 Paperback Book "Profitable Earthworm Farming" by Charlie Morgan, 96 Pages, Shields Publications

With kind permission by Shields Publications.