Program: HathiTrust Digital Library
- Publisher: U.S. Dept. of the Interior, U.S. Geological Survey ; National Technical Information Service, distributor
- Print ISSN: 0741-6296
- Electronic ISSN:
- OCLC Number: 9290627
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1981-1982; 1983-1984; 1985-1986; 1987-1988; 1989-1990; 1991; 1996-1997
|
committed to retain | 2010-02-08 | HTDL |
|