00304nam a2200121Ia 4500008004100000082002000041100002500061245003400086260003000120300000800150942000700158999001700165140113s9999    xx            000 0 und d  a631(02)   P8.98  a"Sparks, D. L., ed."  aAdvances in Agronomy -vol. 98  a2008bElseviercAmsterdam  a422  cBK  c61492d61492