Rāingān kānsưksā thatsana khō̜ng chāo chumchon nai khēt thētsabān Nakhō̜n Khō̜n Kǣn tō̜ singwǣtlō̜m: Environmental concerns of the residents of Khon Kaen municipality by Mahāwitthayālai Khō̜n Kǣn | Menrva Books