Program: HathiTrust Digital Library
- Publisher: United States Geological Survey
- Print ISSN: 0148-0979
- Electronic ISSN: 0148-0979
- OCLC Number: 3267446
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.13 1973; no.14 1973
|
committed to retain | 2017-02-16 | HTDL |
|