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Fig
ure
6.
Comparison of alertness level before and after the trial between light sources
From
Effects of Light’s Colour Temperatures on Visual Comfort Level, Task Performances, and Alertness among Students
B.M.T Shamsul, C.C. Sia, Y.G Ng, K. Karmegan
American Journal of Public Health Research
.
2013
, 1(7), 159-165 doi:10.12691/ajphr-1-7-3
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