Program: HathiTrust Digital Library
- Publisher: Academie bulgare des sciences
- Print ISSN: 0587-2650
- Electronic ISSN:
- OCLC Number: 1777626
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.1-2 1968-69; v.3-4 1970-71; v.5-6 1972-73; v.7-8 1974-75
|
committed to retain | 2011-02-04 | HTDL |
|