00262nam a2200097Ia 4500008004100000082002300041100002300064245003400087260003500121300000800156140113s9999    xx            000 0 und d  a631.1(02)   M0.324  a"Brady, N.C., ed."  aAdvances in Agronomy -vol. 34  a1981bAcademic PresscNew York  a485