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| Location | Zurich (Zurich (Canton) ) |
| GND | 2032321-9 |
| Holdings | Newspaper clippings: 1934…1942 Annual reports: 1932-1933 |
| Signature | A34 E 1 |
| includes | Gruppe Escher-Wyss (Zürich); Wyss-AG, Escher (Zürich); Wyss, Gruppe Escher- (Zürich) |
| URI | https://pm20.zbw.eu/folder/co/073768 |
| ID | co/073768 |