http://walentina.livejournal.com/ ([identity profile] walentina.livejournal.com) wrote in [personal profile] marfa29 2007-12-11 11:50 am (UTC)

а я как раз сижу с химией сейчас)) - составляю тесты для арапов... Да нет, в химии есть полезные термины типа валентности, например))
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