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Johann 1739-1811 Beckmann
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![A History of Inventions and Discoveries [electronic Resource]; 3](https://storage.googleapis.com/menrva_img_storage/covers/9781015041622_43e1f788.jpg)
![A History of Inventions and Discoveries [electronic Resource]; 1](https://storage.googleapis.com/menrva_img_storage/covers/9781015114500_1985784d.jpg)
![A History of Inventions and Discoveries [electronic Resource]; 2](https://storage.googleapis.com/menrva_img_storage/covers/9781015246294_e6ccb48c.jpg)