Naiphaporn Augsornpeug. 2001. A comparative study of construction safety sign comprehension between existing and new-designed signs. Field of Study Industrial Hygiene and Safety, Mahidol University;
Naiphaporn Augsornpeug. (2001) A comparative study of construction safety sign comprehension between existing and new-designed signs . Mahidol University/Bangkok.
Naiphaporn Augsornpeug. A comparative study of construction safety sign comprehension between existing and new-designed signs. . Bangkok:Mahidol University, 2001.
Naiphaporn Augsornpeug. (2001) A comparative study of construction safety sign comprehension between existing and new-designed signs . Mahidol University/Bangkok.