Freeman Bibliographical Database
| Identifier: | A25 |
| Date: | 1838 |
| Concise reference: | Babbage, Charles. 1838. The Ninth Bridgewater Treatise. 2d edn. London: John Murray. |
| Identifier: | A25 |
| Date: | 1838 |
| Concise reference: | Babbage, Charles. 1838. The Ninth Bridgewater Treatise. 2d edn. London: John Murray. |