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Total number of images: unknown - currently only findable via the film list.
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| Type | Company |
| Location | United Kingdom (Western Europe) |
| Industry | Electrical Industry |
| Holdings | Newspaper clippings: 1948-1972 |
| includes | GEM; GEMS; Holophane Ltd – 1964 |
| URI | https://pm20.zbw.eu/folder/co/058390 |
| ID | co/058390 |