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Sudsiri Katatikorn. 1999. Effects of neem seed kernel extract on bradyrhizobium species cultures and on Bradyrhizobium species nitrogen firation and nodulation of yard-long bean (Vigna sinensis Var. Sesquipendalis). Faculty of Graduate Studies, Mahidol University;
Sudsiri Katatikorn. (1999) Effects of neem seed kernel extract on bradyrhizobium species cultures and on Bradyrhizobium species nitrogen firation and nodulation of yard-long bean (Vigna sinensis Var. Sesquipendalis) . Mahidol University/Bangkok.
Sudsiri Katatikorn. Effects of neem seed kernel extract on bradyrhizobium species cultures and on Bradyrhizobium species nitrogen firation and nodulation of yard-long bean (Vigna sinensis Var. Sesquipendalis). . Bangkok:Mahidol University, 1999.
Sudsiri Katatikorn. (1999) Effects of neem seed kernel extract on bradyrhizobium species cultures and on Bradyrhizobium species nitrogen firation and nodulation of yard-long bean (Vigna sinensis Var. Sesquipendalis) . Mahidol University/Bangkok.