Sun near sunspot maximum, showing 23 spot groups
1937 July 13
- Title
- Sun near sunspot maximum, showing 23 spot groups
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.13-35
- Dates
- 1937 July 13
- Extents
- 1 photographs