A comparative study of construction safety sign comprehension between existing and new-designed signs

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Naiphaporn Augsornpeug A comparative study of construction safety sign comprehension between existing and new-designed signs. Thesis (M.Sc. (Industrial Hygiene and Safety))--Mahidol University, 2001. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/103808

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