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| Subject | Russian | Estonian |
| construct. | перфорированный кирпич англ.: air brick; airbrick; hollow tile; ventilated brick; building tile; cored tile; deep hole block; tubing brick; tubular brick; perforated brick; cavity brick; cellular brick // нем.: Hohlziegel; Lochziegel; Röhrenziegel; Hohlbackstein; Lochstein | õõnestellis (ВВладимир) |