RT Journal Article SR Electronic T1 Sandy fields traditional farming for water conservation in China JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 474 OP 477 VO 48 IS 6 A1 Gale, William J. A1 McColl, R. W. A1 Fang, Xie YR 1993 UL http://www.jswconline.org/content/48/6/474.abstract AB