Over de dagelijksche variatie van het aardmagnetisme.
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| OCLC: | 32385023 |
|---|---|
| 主要作者: | |
| 语言: | Dutch |
| 出版: |
Utrecht,
J. Van Druten,
1917.
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| 格式: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |