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| Type | Company |
| Location | Germany (Central Europe) |
| Industry | Nonmetallic Minerals Industry |
| Holdings | Newspaper clippings: 1968-1993 Annual reports: 1917-1919,1921,1922,1924-1935 |
| includes | Baustoffring E. Schwenk; Portland Cementfabrik Karlstadt a. Main AG |
| URI | https://pm20.zbw.eu/folder/co/056688 |
| ID | co/056688 |