Technical paper.
- Publisher: Iowa Geological Survey
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 213808943
- Subject: Coal Iowa.
- Subject code: QE
- Publication history: No. 1-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | no.2-3 | permanent |