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A method for the production of gruendungspfaehlen of site-mixed concrete, with expansions of the pile shaft and of the pile foot, as well as inner tunnel-lining sheathing for carrying out the method
A method for the production of gruendungspfaehlen of site-mixed concrete, with expansions of the pile shaft and of the pile foot, as well as inner tunnel-lining sheathing for carrying out the method
