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Watthana Watthana Nakhon (huyện) Wattana Plainum Wattanasap JarernsriTài liệu tham khảo
WikiPedia: Watthana http://www.bangkokcity.com/community/dist/vadhana/... http://www.bumrungrad.com/ http://www.utaandonthai.com/ http://www.siam-society.org/ //tools.wmflabs.org/geohack/geohack.php?language=v... http://www.bma.go.th/bmaeng/vadhana/ http://www.jfbkk.or.th/