00394nam a2200145Ia 4500008004100000082002000041245003100061260002900092650001300121650001000134650002200144650002800166650002600194650002800220220204s9999    xx            000 0 und d  a631/635bADV.29 0aAdvances in agronomy. V 29  aNew YorkbAcademicc1977  aAgronomy  aGrass  aNitrogen fixation  aSoil organic phosphorus  aSomatic cell genetics  aTrickle drip irrigation