Program: HathiTrust Digital Library
- Publisher: [The Observatory?]
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 13387841
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1922/1923-1936; 1921-1937; 1936/1937-1937/1938
|
committed to retain | 2022-01-01 | HTDL |
|