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Kornkanok Ingkaninan. 1994. Phytochemical studies of Bidens biternata Merr. Sherff. Graduate School, Chulalongkorn University;
Kornkanok Ingkaninan. (1994) Phytochemical studies of Bidens biternata Merr. Sherff . Chulalongkorn University/Bangkok.
Kornkanok Ingkaninan. Phytochemical studies of Bidens biternata Merr. Sherff. . Bangkok:Chulalongkorn University, 1994.
Kornkanok Ingkaninan. (1994) Phytochemical studies of Bidens biternata Merr. Sherff . Chulalongkorn University/Bangkok.