Comparative researches on the variation of the constituents of coal of one seam from south Limburg : the Netherlands
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| OCLC: | 3343497 |
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| 語言: | English |
| 出版: |
Maastricht,
Van Aelst Bros.
1935?
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| 主題: | |
| 格式: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |