Program: HathiTrust Digital Library
- Publisher: U.S. Dept. of the Interior, Geological Survey
- Print ISSN: 8756-9795
- Electronic ISSN: 8756-9795
- OCLC Number: 2800669
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
pt.1(1968); pt.1(1969); pt.1(1970); pt.1(1971); pt.1(1972); pt.1(1974); pt.1(1977-1978); pt.3(1968-1972)
|
committed to retain | 2022-03-04 | HTDL |
|