Research and service of the Illinois State Geological Survey.- Urbana, IL.- 15 S.: Ill.
| 1. Verfasser: |
Frye, John C.
|
|---|---|
| Ort/Verlag/Jahr: |
1966.
|
| Schlagworte: | |
| Enthalten in: |
Illinois State Geological Survey <Urbana-IL>: annual report of the Department of Registration and Education; fiscal year 1964 - 1965 |
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