RT Journal Article SR Electronic T1 Calibrating the USLE P-factor using program FLUVIAL-12 JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 40A OP 44A DO 10.2489/jswc.66.2.40A VO 66 IS 2 A1 Chang, Wayne W. A1 Hromadka, Theodore V. A1 Chang, Howard H. YR 2011 UL http://www.jswconline.org/content/66/2/40A.abstract AB