Program: HathiTrust Digital Library
- Publisher: The Observatory, University of Minnesota
- Print ISSN: 0559-2488
- Electronic ISSN:
- OCLC Number: 1589359
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.1-30; no.1-50 1956-69; no.31-50; 31-50
|
committed to retain | 2017-06-15 | HTDL |
|