Academic Reports and PhD Thesis
Selvarajah, N. 1991. Field studies of ammonia volatilisation potentials of unsaturated soils fertilised with granular urea. Ph.D. Thesis, Department of Soil Science, Lincoln University, Canterbury, New Zealand.
Selvarajah, N. Cameron, K.C. and Swift, R.S. 1987. An evaluation of some laboratory methods of assessing availability of nitrogen in agricultural soils. A report to New Zealand Fertiliser Manufacturer's Research Association Inc., Ravensdown Fertiliser Co-operative and Petrochemical Corporation of NZ Ltd., Department of Soil Science, Lincoln University, Canterbury, New Zealand.
Selvarajah, N. 1980. Soil microbiological studies on nitrification in pastoral soils. A research report submitted in partial fulfilment of the requirements of the Advanced Course in Soil Science for the Degree of Bachelor of Science in Agriculture, Faculty of Agriculture, University of Peradeniya, Sri Lanka.