Program: HathiTrust Digital Library
- Publisher: [Illinois. Institute for Environmental Quality]
- Print ISSN: 0090-8967
- Electronic ISSN: 0090-8967
- OCLC Number: 1786129
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1970-72; 1972; 1974; 1974-75; 1975; 1974-76; 1976
|
committed to retain | 2017-08-31 | HTDL |
|