00271nam a2200109Ia 4500008004100000082001600041100002200057245002700079260002700106300001000133650001800143140113s9999    xx            000 0 und d  a631.416  J8  a" Jackson, M. L."  aSoil chemical analysis  b"Constable & co, 1958"  a498p.  aSoil analysis