| Reference number | LBO/3/34 |
| Alternative reference number | LBO/3/68 |
| Level | File |
| Title | Copy letter from Edward Browne, Vienna, to Henry Oldenburg |
| Date | 20 April 1669 |
| Description | Written at Vienna
Containing some observations of the mines of Hungary |
| Extent | 3p |
| Format | Manuscript |
| Access status | Open |