Determination and discussion of the spectral classes of 700 stars, mostly near the north pole /
Guardat en:
| OCLC: | 6559286 |
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| Autor principal: | |
| Autor corporatiu: | |
| Idioma: | English |
| Publicat: |
Groningen :
Gebroeders Hoitsema,
1920.
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| Matèries: | |
| Format: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |