Rutherfurd photographs of stars surrounding [eta], 27, 34, [gamma], [nu] and 71 Cygni.
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| 格式: | 圖書 |
| 語言: | English |
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New York
Rutherfurd Stuyvesant Fund
c1910.
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| 叢編: | Contributions from the Observatory of Columbia University-- no. 28
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