http://voxpop-66.livejournal.com/ ([identity profile] voxpop-66.livejournal.com) wrote in [personal profile] voxpop_66 2013-11-29 01:23 pm (UTC)

Эйлер - Венн. Их круги и диаграммы по Петерсону в третьем классе )))
Может ты в курсе, как это назвать? )))
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