Title: Rāingān kānsưksā rư̄ang ʻōkāt kānlongthun nai ʻutsāhakam ʻanyamanī læ khrư̄ngpradap nai khēt Phāk Nư̄a tō̜n bon
Description: Report of studies on opportunity for investment in the jems and ornaments industry in the areas of upper Northern Thailand.