RT Journal Article SR Electronic T1 Examining the paired comparison method approach for determining soil organic carbon sequestration rates JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 193A OP 197A DO 10.2489/jswc.69.6.193A VO 69 IS 6 A1 Kenneth R. Olson A1 Mahdi Al-Kaisi A1 Rattan Lal A1 Birl Lowery YR 2014 UL http://www.jswconline.org/content/69/6/193A.abstract AB