00282nam a2200109Ia 4500008004100000082002000041245003100061260002900092650001300121650001900134650001900153220204s9999    xx            000 0 und d  a631/635bADV.27 0aAdvances in agronomy. V 27  aNew YorkbAcademicc1975  aAgronomy  aFertilizer use  aRemote sensing