Christopher Polhem: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Anniversary information added. | Dec 14, 2025 | ||
| First paragraph modernization. | May 01, 2024 | ||
| Modified title of Web site: Tekniska museet - Christopher Polhem � The mechanical alphabet. | Nov 30, 2018 | ||
| Add new Web site: European Route of Industrial Heritage - Biography of Chistopher Polhem. | Nov 30, 2018 | ||
| Add new Web site: Tekniska museet - Christopher Polhem � The mechanical alphabet. | Nov 30, 2018 | ||
| Added photograph. | Nov 07, 2013 | ||
| New article added. | Feb 11, 2010 |
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