Nipaporn Iumsungwan. 2002. Relationship between acoustic and non-acoustic factors and the degree of annoyance of people nearby a metal product factory in Prapradang district, Samutprakarn province. Field of Study Environmental Sanitation, Mahidol University;

Nipaporn Iumsungwan. Relationship between acoustic and non-acoustic factors and the degree of annoyance of people nearby a metal product factory in Prapradang district, Samutprakarn province. . Bangkok:Mahidol University, 2002.

Nipaporn Iumsungwan. (2002) Relationship between acoustic and non-acoustic factors and the degree of annoyance of people nearby a metal product factory in Prapradang district, Samutprakarn province . Mahidol University/Bangkok.