Decolorization of southern Illinois silica /
| Main Author: | |
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| Other Authors: | |
| Format: | Book |
| Language: | English |
| Series: | Report of investigations (Illinois State Geological Survey) ;
no. 47. |
| Subjects: |
| Item Description: | At head of title: State of Illinois. Department of registration and education. Division of the State geological survey. |
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| Physical Description: | 35 pages : illustrations |
| Bibliography: | Bibliography: pages 34-35. |