Program: HathiTrust Digital Library
- Publisher: Smithsonian Institution, Astrophysical Observatory
- Print ISSN: 0066-9989
- Electronic ISSN:
- OCLC Number: 1850636
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.4-9 1965-1966; no.10-14 1967-1971; no.11; no.12
|
committed to retain | 2019-07-07 | HTDL |
|