004180000a22001450004500020002000000060000800020082001900028100002100047245003300068260003100101260000900132300001200141490001100153650010800164  a139780123741073  a100  a630.685 AGR.94  aSparks, Donald L  aAdvances in Agronomy Vol. 94  aCalifornia, Academic press  c2007  axii 292  a94c94  aSoil Rexox/ Rice Production/ Phosphate Reaction/ Ecological AGriculture/ Carbon Metabolism/ Grass Lands