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<xml><bibliography><APA>Winit Tepayakool. (1997) Synthetic studies of 8-oxoprotoberberine alkaloids. Mahidol University,:ม.ป.ท.</APA><Chicago>Winit Tepayakool. 1997. Synthetic studies of 8-oxoprotoberberine alkaloids. ม.ป.ท.:Mahidol University,;</Chicago><MLA>Winit Tepayakool.  Synthetic studies of 8-oxoprotoberberine alkaloids.  ม.ป.ท.:Mahidol University, 1997. Print.</MLA></bibliography></xml>
