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Pasana Pattanakiatichai. (2006) The recommendations to enhance the sustainable tourism development in Ko Kret, Nonthaburi, Thailand . Silpakorn University/Bangkok.
Pasana Pattanakiatichai. The recommendations to enhance the sustainable tourism development in Ko Kret, Nonthaburi, Thailand. . Bangkok:Silpakorn University, 2006.
Pasana Pattanakiatichai. (2006) The recommendations to enhance the sustainable tourism development in Ko Kret, Nonthaburi, Thailand . Silpakorn University/Bangkok.