Program: HathiTrust Digital Library
- Publisher: Iowa Geological Survey
- Print ISSN: 0193-4856
- Electronic ISSN:
- OCLC Number: 5039787
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.4-15(1979-1990); no.11-18 1986-1993; no.21 1996; no.22 1997; no.23 1998; no.16-24 (1991-99); no.19-24 1994-1999; no.24 1999; no.25 2000; no.26 2001
|
committed to retain | 2022-03-14 | HTDL |
|