00319nam a2200109Ia 4500008004100000082002100041100002500062245003300087260004700120300001300167600002900180140224s9999    xx            000 0 und d  a631(047.1) P7.96  aSparks, Donald L.,ed  aAdvances in Agronomy vol. 96  aAmsterdambElsevier / Academic Pressc2007  av96, 428  aEdited  Donald L. Sparks