Piyaporn Thiencharoen. 2005. Preparation and training of manual for hazard identification and risk assessment in small liquefied petroleum gas packing factories. Field of Study Industrial Hygiene and Safety, Mahidol University;
Piyaporn Thiencharoen. (2005) Preparation and training of manual for hazard identification and risk assessment in small liquefied petroleum gas packing factories . Mahidol University/Bangkok.
Piyaporn Thiencharoen. Preparation and training of manual for hazard identification and risk assessment in small liquefied petroleum gas packing factories. . Bangkok:Mahidol University, 2005.
Piyaporn Thiencharoen. (2005) Preparation and training of manual for hazard identification and risk assessment in small liquefied petroleum gas packing factories . Mahidol University/Bangkok.