00583nam a22001217a 4500040003600000082001800036100002400054245014500078260005100223300003500274500003800309650011400347  cRiphah International University  a616.8556bHEN  aHena Arshad (13002)  aPrevalence of voice disorder and effectiveness of vocal hygiene or/ and voice function exercise for improvement of voice quality in teachers  aLahore.bRiphah International Universityc2014  axviii , 97 p.b: illc; 30 cm.  aInclude bibliographical reference  aSpeech Language aPathologyvVocal performancevVocal functionvVoice hygienevTeacher voicevMS-SLPvRCR&AHS