00840nam a2200277   4500001000800000003000400008005001700012007000400029008000400033010001700037020001500054040001900069043001200088050002200100082001600122100002300138245011000161260005700271300003400328504003900362650003300401650003800434650003600472650003200508700002200540140677800020150414112900.0000000  a   83019094   a0801832071  aUOELcDLCdDLC  an-us---00aS624.A1bC76 198300a631.4/52191 aCrosson, Pierre R.10aProductivity effects of cropland erosion in the United States /cPierre R. Crosson with Anthony T. Stout.  aWashington, D.C. :bResources for the Future,c1983.  axii, 103 p. :bill. ;c26 cm.  aIncludes bibliographies and index. 0aSoil erosionzUnited States. 0aSoil productivityzUnited States. 0aCrops and soilszUnited States. 0aCrop yieldszUnited States.1 aStout, Anthony T.