RT Journal Article SR Electronic T1 Polders, dikes, canals, rice, and aquaculture in the Mekong Delta JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 83A OP 89A DO 10.2489/jswc.73.4.83A VO 73 IS 4 A1 Kenneth R. Olson A1 Lois Wright Morton YR 2018 UL http://www.jswconline.org/content/73/4/83A.abstract AB