PT - JOURNAL ARTICLE AU - Klaus W. Flach TI - Low-input agriculture and soil conservation DP - 1990 Jan 01 TA - Journal of Soil and Water Conservation PG - 42--44 VI - 45 IP - 1 4099 - http://www.jswconline.org/content/45/1/42.short 4100 - http://www.jswconline.org/content/45/1/42.full