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Scientific Publication Measurement of Exchangeable NH4+ in Tropical Rice Soils author(s) Sahrawat, K. L.; - Ponnamperuma, F. N.; from International Rice Research Institute (IRRI) permalink open published in 1978 themes Social Inclusion citation Sahrawat, K. L.;; Ponnamperuma, F. N.;, 'Measurement of Exchangeable NH4+ in Tropical Rice Soils', Soil Science Society of America Journal, vol. 42(2), pp. 282-283, Wiley, 1978 Publications and datasets provided via GARDIAN Open original