Incoming Resources
- Soil, silt, and sand, layers of the underground, by Jody Sullivan Rake ; consultant, Susanne Clement, PhD, Assistant Professor, Department of Geology, Kent State University, Kent, Ohio
- Soil, Annette Whipple
- Teaming with microbes, a gardener's guide to the soil food web, Jeff Lowenfels & Wayne Lewis ; foreword by Elaine Ingham
- Seed, soil, sun, Earth's recipe for food, Cris Peterson ; photographs by David R. Lundquist
- Roots, bulbs, and bacteria, growths of the underground, by Jody Sullivan Rake ; consultant, William D. Bowman, PhD, Professor, Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado