P.W. Lippert to Otto Lilienthal 31 May 1891
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| Sender | P.W. Lippert |
|---|---|
| Recipient | Otto Lilienthal |
| Date sent | 31 May 1891 |
| From location | |
| To location | |
| Communication type | |
| Language | |
| Refers to flight? | |
| Tech fields | |
| Length (in words) | |
| Full text available |
