Title: Khrōngkān pramœ̄n yutthasāt kānthōngthīeo klum c̄hangwat pratū tawanō̜k sū ʻIndōčhīn (sanuk : Sakon Nakhō̜n Nakhō̜n Phanom Mukdāhān Kālasin)
First published: 2007
Description: On evaluation of tourism strategy of a group of four provinces of Sakon Nakhon, Nakhon Phanom, Mukdahan and Kalasin, gate- ways to Indo-China, Northeastern Thailand.