00360nam a2200097Ia 4500008004100000100002100041245004500062260012900107700001200236700001400248220216s9999    xx            000 0 und d  aKrishnakumar A K 0aPotassium in soils of rubber plantations  bIn: Potassium for plantation crops (Eds. M. Singh and M.K. Mishra). Potassium Research Institute of India, Curgoan, pp.60-70  aGupta C  aPotty S N