Program: HathiTrust Digital Library
- Publisher: Bulgarian Academy of Sciences, Scientific Information Centre
- Print ISSN: 0205-3772
- Electronic ISSN:
- OCLC Number: 21128328
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.32:3 1989; v.33:3 1990; v.33:2 1990; v.33:1 1990
|
committed to retain | 2012-01-04 | HTDL |
|