Supaporn Suwanpitak. 2005. Comparative study between benchmarking and self evaluation for improvement of working environment. Field of Study Industrial Hygiene and Safety, Mahidol University;
Supaporn Suwanpitak. (2005) Comparative study between benchmarking and self evaluation for improvement of working environment . Mahidol University/Bangkok.
Supaporn Suwanpitak. Comparative study between benchmarking and self evaluation for improvement of working environment. . Bangkok:Mahidol University, 2005.
Supaporn Suwanpitak. (2005) Comparative study between benchmarking and self evaluation for improvement of working environment . Mahidol University/Bangkok.