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| Type | Company |
| Location | United States (North America) |
| Industry | Energy and Water Industries, General |
| Holdings | Newspaper clippings: 1972-1997 Annual reports: 1931-1974,1976-1993,1995 |
| includes | Public Service Company of Colorado (Denver) |
| URI | https://pm20.zbw.eu/folder/co/016892 |
| ID | co/016892 |