Coal balls as an index to the constitution of coal
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Author
Publication
1939 - State Geological Survey, Urbana, Ill, Illinois
Language
English
Word Count
47,250 words, Guess
Page Count
189 pages
Identifiers
- Internet Archivecoalballsasindex51scho
- OCLC Control Number32706877
- Open LibraryOL25410589M
Classifications
- DDC553.24
Subjects
Topics
Series Statement
- Circular / Illinois State Geological Survey -- no. 51
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