Harry Budiman และผู้แต่งคนอื่นๆ. (2018) Preparation of calibration standard gas mixtures by primary gravimetric method: a case study on 960 ?mol/mol of carbon dioxide in a nitrogen matrix. <i>Engineering and Applied Science Research</i>, <i>45</i>(3), 173-179.Harry Budiman และผู้แต่งคนอื่นๆ. "Preparation of calibration standard gas mixtures by primary gravimetric method: a case study on 960 ?mol/mol of carbon dioxide in a nitrogen matrix". Engineering and Applied Science Research 45 (2018):173-179.Harry Budiman และผู้แต่งคนอื่นๆ. Preparation of calibration standard gas mixtures by primary gravimetric method: a case study on 960 ?mol/mol of carbon dioxide in a nitrogen matrix. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2018.