http://xor-lifestyle.livejournal.com/ ([identity profile] xor-lifestyle.livejournal.com) wrote in [personal profile] russos 2007-02-08 02:14 pm (UTC)

совершенно случайно нашел советские расчеты про прочность бетона

http://www.metro.ru/library/rasskazy_stroitelei_metro/82.html
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