Derivation of the change of colour with distance and apparent magnitude : together with a new determination of the mean parallaxes of the stars with given magnitude and proper motion
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| OCLC: | 2783434 |
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| Language: | English |
| Published: |
Groningen :
Hoitsema,
1915.
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| Format: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |