RT Journal Article SR Electronic T1 RES-N-TILLâ„¢ JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 551 OP 553 VO 49 IS 6 A1 Kok, H. A1 Thien, J. YR 1994 UL http://www.jswconline.org/content/49/6/551.abstract AB