Browsing by Author "Withana, A.K."
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Item Evaluation of phosphorus extraction methods for assessing phosphorus availability of some Sri Lankan soils(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1995) Withana, A.K.; Kumaragamage, D.Item Retention of phosphorus by some surface soils of Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1993) Withana, A.K.; Kumaragamage, D.