Title: Phonkrathop čhāk kānpen mư̄angthā khō̜ng ʻAmphœ̄ Chīang Sǣn læ ʻAmphœ̄ Chīang Khō̜ng, Čhangwat Chīang Rāi
Description: Research on the impacts from being port cities of Chiang Saen and Chiang Kong District, Chiang Rai Province.