Wannakarn Nitayarerk. 2006. Hollow fiber supported liquid phase microextraction for the determination of quaternary ammonium herbicides. Field of Study Chemistry, Chulalongkorn University;
Wannakarn Nitayarerk. (2006) Hollow fiber supported liquid phase microextraction for the determination of quaternary ammonium herbicides . Chulalongkorn University/Bangkok.
Wannakarn Nitayarerk. Hollow fiber supported liquid phase microextraction for the determination of quaternary ammonium herbicides. . Bangkok:Chulalongkorn University, 2006.
Wannakarn Nitayarerk. (2006) Hollow fiber supported liquid phase microextraction for the determination of quaternary ammonium herbicides . Chulalongkorn University/Bangkok.