Siriparn Sahairaksa. (1999) Comparison of emulsion oil removal efficiency in gas station wastewater with different adsorbents. Mahidol University,:ม.ป.ท.Siriparn Sahairaksa. 1999. Comparison of emulsion oil removal efficiency in gas station wastewater with different adsorbents. ม.ป.ท.:Mahidol University,;Siriparn Sahairaksa. Comparison of emulsion oil removal efficiency in gas station wastewater with different adsorbents. ม.ป.ท.:Mahidol University, 1999. Print.