Program: HathiTrust Digital Library
- Publisher: National Academy of Sciences, Printing and Pub. Office
- Print ISSN: 0276-0533
- Electronic ISSN:
- OCLC Number: 2691058
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1961-1962; 1956-63; 1964; 1966; 1968; 1969-1970; 1970-1971; 1973-1974; 1972-1975; 1977; 1978-1979; 1979; 1988
|
committed to retain | 2019-09-07 | HTDL |
|