Partly reprinted from "Plant and soil" vol.170, no.1, 1995.
The significance and regulation of soil biodiversity : proceedings of the International Symposium on Soil Biodiversity, held at Michigan State University, East Lansing, May 3-6, 1993. ISBN 0792331389. Published by Kluwer Academic in 1995. Publication and catalogue information, links to buy online and reader comments.