Front office functional competencies provide information about in-house services D1.HFO.CL2.11 Assessor Manual
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- กรุงเทพมหานคร : Office of the permanent secretary ministry of tourism and sports, 2015.
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- Front office functional competencies provide information about in-house services Assessor Manual Dark Pink Book .
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Customer services Trainee Manual Office of the permanent secretary ministry of tourism and sports