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Spectral Classification of the Nuclei of Planetary Nebulae and of Ancient Novae
- Source :
- Astronomische Nachrichten. 242:201-210
- Publication Year :
- 1931
- Publisher :
- Wiley, 1931.
Details
- ISSN :
- 15213994 and 00046337
- Volume :
- 242
- Database :
- OpenAIRE
- Journal :
- Astronomische Nachrichten
- Accession number :
- edsair.doi...........6c1c83de97352ea5f7c3d0ace7fbefb9