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| Type | Company |
| Location | United States (North America) |
| Industry | Chemical Industry |
| Holdings | Newspaper clippings: 1969-1996 Annual reports: 1973-1991,1993-1995 |
| includes | Diamond Alkali Co. (Dallas); Diamond Shamrock Corp. (Dallas); Shamrock Oil & Gas Corp. (Dallas) |
| URI | https://pm20.zbw.eu/folder/co/015857 |
| ID | co/015857 |