Patthamaritthikul, T.; Na Talang, C.; Jittithavorn, C.; Tungbenchasirikul, S. The Attitude Analysis the Needs of Steak Holder the Potential of Border Tourism Cities to Create the Linkage of Greater Mekong Subregion: Mukdahan-Savannakhet-Quang Tri. RJPJ 2019, 13, 245-255.