M0000232: Nachet collection: eyepiece, double of Hartnack.
- Date:
- August 1929
- Reference:
- WT/D/1/20/1/3/91
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: M0000232: Nachet collection: eyepiece, double of Hartnack. Source: Wellcome Collection.
