RT Journal Article SR Electronic T1 Impact of the Agricultural Research Service Watershed Assessment Studies on the Conservation Effects Assessment Project Cropland National Assessment JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 137A OP 144A DO 10.2489/jswc.69.5.137A VO 69 IS 5 A1 Arnold, Jeffery G. A1 Harmel, R. Daren A1 Johnson, Mari-Vaughn V. A1 Bingner, Ronald A1 Strickland, Timothy C. A1 Walbridge, Mark A1 Santhi, Chinnasamy A1 DiLuzio, Mauro A1 Wang, Xiuying YR 2014 UL http://www.jswconline.org/content/69/5/137A.abstract AB