00282nam a2200109Ia 4500008004100000082002000041245003100061260002900092650001300121650001900134650001900153220204s9999    xx            000 0 und d  a631/635bADV.03 0aAdvances in agronomy. V 03  aNew YorkbAcademicc1951  aAgronomy  aSoil nematodes  aSoil potassium