1. Bentonithandbuch : Ringspaltschmierung für den Rohrvortrieb /: Ringspaltschmierung für den Rohrvortrieb. ([2016]) Authors: Praetorius, Steffen; Schösser, Britta Record Type: Book Extent: 1 online resource (600 pages), illustrations (black and white, and colour) View Content: Available online (eLD content is only available in our Reading Rooms) ↗