Dark clouds in Kapteyn's special areas 2, 5, 9 and 24 and the proper motion of stars in these regions.
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| OCLC: | 20539701 |
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| 主要作者: | |
| 企業作者: | |
| 語言: | English |
| 出版: |
Groningen,
Hoitsema,
1938.
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| 格式: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |