The Soul of Soil ─ A Soil-Building Guide for Master Gardeners and Farmers

Grace Gershuny, in addition to her position on the staff of the U.S. Department of Agriculture's National Organic Program, has worked for many years as an educator, organizer, and market gardener. She is nationally known in the alternative agriculture movement, is the author of Start With the Soil, and Compost, Vermicompost and Compost Tea: Feeding the Soil on the Organic Farm as well as co-author of The Rodale Book of Composting and The Soul of Soil. She is on the faculties of the Institute for Social Ecology and Goddard College, and lives in Barnet, Vermont.

Joe Smillie is the senior vice-president of Quality Assurance International, a leading organic certification agency. He is co-author of the books The Orchard Almanac and Rodale's Chemical-Free Yard & Garden, and is a founding member of the Organic Trade Association, and the International Inspectors Group. He lives in Richmond, Vermont.