00257nam a2200097Ia 4500008004100000082002000041100002300061245003400084260003300118300000800151140113s9999    xx            000 0 und d  a631(02)   M5.38  a"Brady, N.C., Ed."  aAdvances in Agronomy -Vol. 38  a1985bAcademic PresscLondon  a378