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Zaharah Abdul Rahman, . and Hawa Jaffar, . and Sharifuddin Haji Abdul Hamid, . Accumulation and migration of phosphate applied as rock phosphate in an oil palm Elaeis guineensis plantation in Malaysia. pp. 317-321. ISSN 0126-6128
Zaharah Abdul Rahman, . and Sharifuddin Haji Abdul Hamid, . and Razley M.N., . and Mohd Saidi, . Measurement of nitrogen fixed by Pueraria phaseoloides by N-15 dilution technique. pp. 45-49. ISSN 0126-6128
Zaharah Abdul Rahman, . and Sharifuddin Haji Abdul Hamid, . and Subramaniam R., . Nitrogen fixation by Leucaena leucocephala as measured by N-15 dilution technique. pp. 17-22. ISSN 0126-6128