Pranee Tethgatuk. 1996. Analysis of organophosphorus pesticides in water using solid-phase extraction followed by high performance liquid chromatography. Bangkok:Chulalongkorn University;
Pranee Tethgatuk. (1996) Analysis of organophosphorus pesticides in water using solid-phase extraction followed by high performance liquid chromatography (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.
Pranee Tethgatuk. Analysis of organophosphorus pesticides in water using solid-phase extraction followed by high performance liquid chromatography. Bangkok:Chulalongkorn University, 1996.
Pranee Tethgatuk. (1996) Analysis of organophosphorus pesticides in water using solid-phase extraction followed by high performance liquid chromatography (รายงานผลงานวิจัย). Chulalongkorn University:Bangkok.