View documents (IIIF viewer) (70 documents / 70 available on the web) View documents (DFG viewer)
For intellectual property law reasons accessible only from ZBW reading room.
Total number of images: unknown - currently only findable via the film list.
Material may exist on microfiche. Access is only possible at the Hamburg site of the ZBW - please contact us via the feedback address at the foot of this page.
| Type | Business syndicate |
| Location | Bochum (North Rhine-Westphalia) |
| Industry | Nonmetallic Minerals Industry |
| GND | 16219225-3 |
| Holdings | Newspaper clippings: 1926-1932, 1934, 1937 Annual reports: 1925-1933 |
| Signature | A10 W 144 |
| URI | https://pm20.zbw.eu/folder/co/044184 |
| ID | co/044184 |