The Henry Draper extension / by Annie J. Cannon
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| Superior document: | Annals of the Astronomical Observatory of Harvard College 100 |
|---|---|
| VerfasserIn: | |
| Place / Publishing House: | Cambridge, Mass. : Observatory, 1925/36 |
| Year of Publication: | 1925 |
| Language: | English |
| Series: | Annals of the Astronomical Observatory of Harvard College
100 |
| Physical Description: | 226 S. |
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