00422aam a2200157   4500003000400000005001700004008004100021020001500062040000600077082001500083100002000098245006400118260005100182300000900233650002200242OSt20260625134324.0140223b1990    xxu||||| |||| 00| 0 eng d  a925101342x  c   a631.45 KEL  aKelley Hubert w  aKeeping the land Alive  Soil erosion - its Causes and cures  aRome bFood and Agriculture organizationc1983  a79p.  aSoil Conserzation