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Total number of images: unknown - currently only findable via the film list.
Material may exist on microfiche. Access is only possible at the Hamburg site of the ZBW - please contact us via the feedback address at the foot of this page.
| Type | Company |
| Location | Netherlands (Western Europe) |
| Industry | Electrical Industry |
| Holdings | Newspaper clippings: 1951-1959 Annual reports: 1956-1962, 1964 |
| Signature | A19 H 23 |
| includes | Van der Heem (Den Haag) |
| URI | https://pm20.zbw.eu/folder/co/049945 |
| ID | co/049945 |