Program: HathiTrust Digital Library
- Publisher: Observatoorium
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 6118277
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.21-30 1969-1971; no.41-48 1973-1974; no.49-57 1975-1978
|
committed to retain | 2012-04-07 | HTDL |
|