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Wan Mohamad Wan Othman, . Allantoin and amino acid composition in xylem exudates of nodulated and nitrate-dependent cowpea plants. pp. 53-63. ISSN 0126-6128
Wan Mohamad Wan Othman, . and Asher C.J., . Effects of stubble leaf removal and frequent cutting on nitrogen fixation and regrowth of phasey bean. pp. 39-49. ISSN 0126-8643