Program: HathiTrust Digital Library
- Publisher: U.S., Dept. of the Interior, Geological Survey
- Print ISSN: 0043-1400
- Electronic ISSN:
- OCLC Number: 2250607
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1951:1-1955:12,1956:2-1960:12
|
committed to retain | 2016-02-19 | HTDL |
|