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รวมทรัพย์พ. Guidelines for development of marketing mix of natural attractions in Kanchanaburi Province. Journal of Management Science Nakhon Pathom Rajabhat University [Internet]. 24Jun.2019 [cited 24Oct.2019];6(1):75-0. Available from: https://www.tci-thaijo.org/index.php/JMSNPRU/article/view/197231