Did You Hear About the Decibels?

shared by posheyewear on Apr 30, 2013 in Health

Did You Hear About the Decibels?

shared by posheyewear on Apr 30, 2013 in Health

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Get to know the importance of Decibels, a unit of sound. With information and research by http://www.WhiteNoiseDirect.com
Category: Health
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