00310nam a2200109Ia 4500008004100000020001800041082002100059100002100080245003900101260003600140650002400176220204s9999    xx            000 0 und d  a9780123810359  a631/635bADV.106  aSparks, Donald L 0aAdvances in agronomy. V.106, 2010.  aAmsterdambAcademic Pressc2010  aSoil organic matter