I. Smokeless briquets : impacted without binder from partially volatilized Illinois coals; progress report of a laboratory investigation. II. Smoke index: a qualitative measurement of smoke /
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| Format: | Book |
| Language: | English |
| Series: | Report of investigations (Illinois State Geological Survey) ;
no. 41. |
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| Item Description: | At head of title: State of Illinois ... Department of registration and education. |
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| Physical Description: | 113 pages : illustrations |
| Bibliography: | Bibliography: pages 111-113. |