00326nam a2200121Ia 4500008004100000020001500041082002000056100002100076245003000097260003600127650002400163650001700187220204s9999    xx            000 0 und d  a0120007924  a631/635bADV.74  aSparks, Donald L 0aAdvances in agronomy V.74  aSan DiegobAcademic Pressc2001  aAcid soil tolerance  aSoil quality