Program: HathiTrust Digital Library
- Publisher: Office of Research and Development, U.S. Environmental Protection Agency
- Print ISSN: 0147-4456
- Electronic ISSN:
- OCLC Number: 3162861
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1975/1980; 976-80; 977-81
|
committed to retain | 2017-08-22 | HTDL |
|