Химики, помогайте!
Jan. 13th, 2009 11:52 pm![[identity profile]](https://www.dreamwidth.org/img/silk/identity/openid.png){kind=small}
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useful_faqАкриловые пары легче воздуха? А пары ацетона?
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Date: 2009-01-13 10:24 pm (UTC)