Pitcha Singhaphan และผู้แต่งคนอื่นๆ. (2013) AUTOMATIC ON-LINE INTERNAL STANDARD ADDITION SYSTEM FOR DETERMINATION OF METALS BY INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMETRY. Chulalongkorn University:ม.ป.ท.Pitcha Singhaphan และผู้แต่งคนอื่นๆ. 2013. AUTOMATIC ON-LINE INTERNAL STANDARD ADDITION SYSTEM FOR DETERMINATION OF METALS BY INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMETRY. ม.ป.ท.:Chulalongkorn University;Pitcha Singhaphan และผู้แต่งคนอื่นๆ. AUTOMATIC ON-LINE INTERNAL STANDARD ADDITION SYSTEM FOR DETERMINATION OF METALS BY INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMETRY. ม.ป.ท.:Chulalongkorn University, 2013. Print.