na INLIS000000000058301 20230124115141 0010-0123000191 ta 230124 g 0 eng 0-8018-3207-1 631.459 631.459 CRO p Crosson, P.R and Stout, A.T. Productivity Effects of Cropland Erosion in The United States Amerika : Resources for The Furure, Inc, 1983 vi, 103 p. : ill. ; 25 cm. Soil erosion Soil productivity Crops and soil 187/D/2001