Program: HathiTrust Digital Library
- Publisher: U.S. Dept. of the Interior, Bureau of Mines
- Print ISSN: 0364-7951
- Electronic ISSN:
- OCLC Number: 2256334
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
Dec 1968-1975 (lacks Jan 1969, May 1970 pt.2)
|
committed to retain | 2019-09-06 | HTDL |
|