Kanokpoj Areekul. (2007) Measurement of He-Ne laser wavelength for calibration of meter standard according to the SI definition /. Kasetsart University,:ม.ป.ท.Kanokpoj Areekul. 2007. Measurement of He-Ne laser wavelength for calibration of meter standard according to the SI definition /. ม.ป.ท.:Kasetsart University,;Kanokpoj Areekul. Measurement of He-Ne laser wavelength for calibration of meter standard according to the SI definition /. ม.ป.ท.:Kasetsart University, 2007. Print.