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- Helmberger, Albert [remove] 2
- 624.151 2
- Engineering geology -- Periodicals 2
- Rock mechanics -- Periodicals 2
- Soil mechanics -- Periodicals 2
- Tunneling -- Periodicals 2
- Eisenbahntunnel -- Sanierung -- Statik 1
- Natursteinmauerwerk -- Instandsetzung unter Betrieb -- Arbeitszug 1
- Railway tunnels -- Refurbishing -- Structural analysis 1
- natural stone masonry -- maintenance during ongoing operation -- track maintenance train 1