พันธุ์เอี่ยม ก. THE LEADERSHIP OF INTEGRATED TOURISM AND DEVELOPMENT STRATEGY MERGING BETWEEN CONSERVATIVE AND MODERN TOWARDS THE WORLD CLASS RANKING STATUS: A CASE STUDY OF THE COASTAL CITIES IN THE UPPER SOUTHERN REGION OF THAILAND. RMUTT-GBER [internet]. 2015 Jun. 30 [cited 2025 Apr. 10];10(1):157-70. available from: https://so03.tci-thaijo.org/index.php/RMUTT-Gber/article/view/242039