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| One of the last electromechanical 4-species calculators built in the DDR from 1960 to 1968 |
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| Total images: 11 | Create web photo albums with Jalbum | Chameleon skin | Help |
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| One of the last electromechanical 4-species calculators built in the DDR from 1960 to 1968 |
|
|
|
|
| |||||
|
|
|
|
| |||||
|
| Total images: 11 | Create web photo albums with Jalbum | Chameleon skin | Help |