Program: HathiTrust Digital Library
- Publisher: Iowa Geological Survey
- Print ISSN: 0361-7629
- Electronic ISSN: 0361-7629
- OCLC Number: 2359785
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.43-44 1973; v.45 1974; v.46 1975; v.47 1976; v.48 1977; v.49 1978; v.50 1979
|
committed to retain | 2017-02-16 | HTDL |
|