PT - JOURNAL ARTICLE AU - John D. Walker TI - Conservation tillage in small grain production DP - 1983 May 01 TA - Journal of Soil and Water Conservation PG - 240--243 VI - 38 IP - 3 4099 - http://www.jswconline.org/content/38/3/240.short 4100 - http://www.jswconline.org/content/38/3/240.full