Program: HathiTrust Digital Library
- Publisher: Bulgarian Academy of Sciences, Scientific Information Centre
- Print ISSN: 0001-3471
- Electronic ISSN:
- OCLC Number: 7475920
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.17 1979; v.19 1981; v.20 1981-1982; v.22 1984
|
committed to retain | 2022-09-16 | HTDL |
|