CH 69.a
- Name:
- Optical glass
- Date:
- Unknown
- Dimensions (H x W x D, cm):
- 0.0 x 0.0 x 0.0
- Associated Lecturer/s
-
Ernst Johannes Hartung
Probably related to 69. Either optical grating trials of pre WW1 B1
Probably related to 69. Either optical grating trials of pre WW1 B1