RT Journal Article SR Electronic T1 SOIL CONSERVATION IN THE UNITED STATES: POLICY AND PLANNING JF Landscape Journal FD University of Wisconsin Press SP 199 OP 200 DO 10.3368/lj.11.2.199 VO 11 IS 2 A1 Pitt, David G. YR 1992 UL http://lj.uwpress.org/content/11/2/199.abstract AB