RT Journal Article SR Electronic T1 The past, present, and future of the cover crop industry JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 130A OP 133A DO 10.2489/jswc.70.6.130A VO 70 IS 6 A1 Groff, Steve YR 2015 UL http://www.jswconline.org/content/70/6/130A.abstract AB