Gradually people noticed

12.05.2017 | комментариев 0 | раздел: Стены

With the onset of the Middle Ages, ancient knowledge was lost, but gradually people noticed that the deposits of limestones contaminated with clay have special strength and water resistance, even surpass the famous Roman composition in operational characteristics.

Оставить комментарий

Текст сообщения:

Имя:

E-mail:

Капча загружается...