M0006124: The Sequence of Nebular Types, from Hubble: The Realm of the Nebulae (1936)
- Date:
- 27 February 1939
- Reference:
- WT/D/1/20/1/51/23
Licence: In copyright
Credit: M0006124: The Sequence of Nebular Types, from Hubble: <i>The Realm of the Nebulae</i> (1936). Source: Wellcome Collection.
