00369nam a2200121Ia 4500008004100000020001500041082002000056100001700076245006300093260004400156650003100200700001600231220204s9999    xx            000 0 und d  a0813828570  a631.432.21bJAL  aJalota,  S K 0aREducing soil water evaporation tillage and straw mulching  aIowabIowa State University Pressc1998  aSoil moisture conservation  aPrihar, S S