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Subject: hollow boarded When the ground floor of a structure is constructed of hollow boarded it is necessary to cover the site within the external walls with concrete or other suitable material to keep the interior free from dampness might otherwise rise from the ground.наверно слово пропущено после hollow boarded, но все равно не совсем понятно как лучше перевести это hollow boarded. |
| скорее hollow boards |
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