a periodic disturbance of the particles of a substance that may be propagated without net movement of the particles... I would be on vacation for this platform, until September. Will come back by then with new news and exciting views. Thanks!!!
Friday, 5 August 2011
newsfrommeco201108
a periodic disturbance of the particles of a substance that may be propagated without net movement of the particles... I would be on vacation for this platform, until September. Will come back by then with new news and exciting views. Thanks!!!
Monday, 1 August 2011
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