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Date: Thursday, 30. November 2017
Author: Gast
Review:
Whereabouts in are you from? mg viagra generika When the researchers pulled the porous silicon out of the furnace, they found that it had turned from orange to purple or black. When they inspected it under a powerful scanning electron microscope they found that it looked nearly identical to the original material but it was coated by a layer of graphene a few nanometers thick.
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