00307nam a2200097Ia 4500008004100000100001700041245005300058260006500111300001000176650002300186220216s9999    xx            000 0 und d  aYogaratnam N 0aFuture trends and policies in soil-plant studies  bBulletin of the Rubber Research Institute of Sri Lankac1993  a34-37  aSoil plant studies