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Are 308 nm and 311 nm better for vitamin D production?
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06-10-2015, 11:10 AM
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Turbo Girl
Join Date: Feb 16 2009
Location: Alaska
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Re: Are 308 nm and 311 nm better for vitamin D production?
How do the Rejuvenessence lamps that I got from you, for the bench in my old home bed compare with these?
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