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"OPREMA und ZRA 1 - die Rechenmaschinen der Firma Carl Zeiss Jena."
Immo O. Kerner (2004)
- Immo O. Kerner:
OPREMA und ZRA 1 - die Rechenmaschinen der Firma Carl Zeiss Jena. Informatik in der DDR 2004: 147-177
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