Front office functional competencies provide international direct dial (IDD) service information  D1.HFO.CL2.12 Assessor Manual 
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 - กรุงเทพมหานคร :  Office of the permanent secretary ministry of tourism and sports,  2015. 
 - 44 หน้า 
 - Front office functional competencies provide international direct dial (IDD) service information Assessor Manual  Dark Pink Book .
<br/><br/><label>ISBN: </label>9786162972614 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communications<br/>Telecommunication<br/>Office of the permanent secretary ministry of tourism and sports
<br/><br/><label>LC Class. No.: </label>H0306