This is the 4^th Edition of this popular text which reviews all aspects of earthworm biology and ecology.  The book has been fully revised and updated throughout. Particular changes include: new treatments of earthworm taxonomy, diversity, migration and geographical distribution; interactions between earthworms and other soil organisms, especially microorganisms and soil-borne pests and diseases; as well as the importance of earthworms in organic waste management.

This book is established as a key valuable text for students of agriculture, soil science, and soil invertebrate zoology and ecology.