Anchisa Chinworakit และ Pakorn Varanusupakul. (2011) Hollow fiber liquid phase microextraction for cr(iii) and cr(vi) speciation. Chulalongkorn University:ม.ป.ท.Anchisa Chinworakit และ Pakorn Varanusupakul. 2011. Hollow fiber liquid phase microextraction for cr(iii) and cr(vi) speciation. ม.ป.ท.:Chulalongkorn University;Anchisa Chinworakit และ Pakorn Varanusupakul. Hollow fiber liquid phase microextraction for cr(iii) and cr(vi) speciation. ม.ป.ท.:Chulalongkorn University, 2011. Print.