Recommended References:
Dindall, D. L. ed. Soil Biology Guide. John Wiley & Sons. NY. 1990.

Evans, H.E. Life on a Little Known Planet. Lyons and Burford, NY. 1993

Johnson, E.A. and K.M. Catley. Life in the Leaf Litter. American Museum of Natural History. NY. 2002.
http://cbc.amnh.org/center/pubs/pubscbcinverts.php?npid=8

Web Resources:
Baltimore Ecosystem Study - Soil Fauna studies
http://www.beslter.org

A soil biology primer for farmers, conservationists, soil scientists, students, and educators.....
http://soils.usda.gov/sqi/concepts/soil_biology/biology.html

QuickTime TM movies on life in the soil
www.agron.iastate.edu/~loynachan/mov/

A pictographic key to Leaf litter arthropods from the MIssouri Ozark Forest Ecosystem
www.missouri.edu/~bioscish/index.shtml

Dichotomous key to leaf litter arthropods
www.hope.edu/academic/biology/leaflitterarthropods/