 | The free catalogue of the dwf-drawings: Projects and technical
solutions in the field of underground construction (bored columns,
top-down (top down) construction method, diaphragm walls, shoring of
excavation, jet-grouting, grouting, lining...), bed drainage,
unwatering, waterproofing of buildings and constructions.
http://www.yurkevich.ru/22r-e.php
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