PT - JOURNAL ARTICLE AU - Carey L. Draeger TI - Sustainable agriculture at work DP - 1990 Jan 01 TA - Journal of Soil and Water Conservation PG - 83--85 VI - 45 IP - 1 4099 - http://www.jswconline.org/content/45/1/83.short 4100 - http://www.jswconline.org/content/45/1/83.full