The world beneath your feet : a closer look at soil and roots / by Mark Mϋller.

A booklet about soil, soil ecology and soil conservation produced by the Iowa Living Roadway Trust Fund and the Iowa Department of Transportation.

Roadside erosion research in selected Iowa counties, 1972

This research project discusses roadside stabilization along secondary roads. Another objective was to investigate various commercial soil stabilizers, as a replacement for straw mulch, to control soil erosion before vegetation.