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| Type | Company |
| Location | Hamburg (Germany) |
| Industry | Nonmetallic Minerals Industry |
| Holdings | Newspaper clippings: 1916-2005 Annual reports: 1908-1930, 1996-2006 |
| includes | Alsen AG (Hamburg) (-2003); Alsen-Breitenburg Zement- u. Kalkwerk GmbH (1997); Alsen’sche Portland Cementfabrik (1971) |
| URI | https://pm20.zbw.eu/folder/co/000961 |
| ID | co/000961 |