00896nam a22002057a#4500001000700000007000300007008004100010020001800051050001000069245013200079246002300211260012000234300002000354490010100374490003600475650001900511650002200530650006900552710006900621830015tz181213t        th ||||| |||| 00| 0 eng d  a9786162972614  aH0306  aFront office functional competencies provide international direct dial (IDD) service informationbD1.HFO.CL2.12 Assessor Manual  aTelephone operator  aกรุงเทพมหานคร :bOffice of the permanent secretary ministry of tourism and sports,c2015.  a44 หน้า  aFront office functional competencies provide international direct dial (IDD) service information  aAssessor ManualvDark Pink Book  aCommunications  aTelecommunication  aOffice of the permanent secretary ministry of tourism and sports  aOffice of the permanent secretary ministry of tourism and sports