Program: HathiTrust Digital Library
- Publisher: Dept. of Natural Resources, Illinois State Geological Survey
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 37665550
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1987/1988; 1989/1990-1990/1991; 1995/1996:2; 1995/1996:1; 1997-1998; 1995-2000; 2000-2008
|
committed to retain | 2018-04-12 | HTDL |
|