http://tinvald.livejournal.com/ ([identity profile] tinvald.livejournal.com) wrote in [personal profile] lempi 2013-03-16 04:10 pm (UTC)

я настолько хорошо забыла школьную программу, что теперь смотрю на это, и даже вспомнить не могу, откуда это. Это Физика?
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