Articles by David Koh (3)

Noise-Induced Standard Threshold Shifts of 85 and 90 dBA as Permissible Exposure Limits, Post-Shift Exposure of 1 Month Duration

Balachandar S. Sayapathi, Anselm Ting Su and David Koh

Research Journal of Biological Sciences 9 ( 5 ): 169 - 176 , 2014

Knowledge, Attitude and Practice in Relation to Noise-Induced Hearing Loss in Two Factories

Balachandar S. Sayapathi, Anselm Ting Su and David Koh

Research Journal of Biological Sciences 9 ( 6 ): 197 - 204 , 2014

Comparing Standard Threshold Shift among Employees Adopting 85 and 90 dBA as Permissible Exposure Limits over Six Months

Balachandar S. Sayapathi and David KOH

Research Journal of Biological Sciences 10 ( 3 ): 29 - 36 , 2015

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