Chiraporn Srihun. (1997) Determination of chemical structures of active ingredients from Piper sarmentosum Roxb. Mahidol University,:ม.ป.ท.Chiraporn Srihun. 1997. Determination of chemical structures of active ingredients from Piper sarmentosum Roxb. ม.ป.ท.:Mahidol University,;Chiraporn Srihun. Determination of chemical structures of active ingredients from Piper sarmentosum Roxb. ม.ป.ท.:Mahidol University, 1997. Print.