Program: HathiTrust Digital Library
- Publisher: U.S. Dept. of the Interior, Geological Survey
- Print ISSN: 0364-7064
- Electronic ISSN:
- OCLC Number: 191705190
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.13-18 (1982-1987); no.19
|
committed to retain | 2016-04-11 | HTDL |
|