Determination and discussion of the spectral classes of 700 stars, mostly near the north pole /
Salvato in:
| OCLC: | 6559286 |
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| Autore principale: | |
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| Lingua: | English |
| Pubblicazione: |
Groningen :
Gebroeders Hoitsema,
1920.
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| Soggetti: | |
| Natura: | Tesi Monograph Note that CRL will digitize material from the collection when copyright allows. |