Program: HathiTrust Digital Library
- Publisher: Izd-vo na Bŭlgarska ta akademii︠a︡ na naukite
- Print ISSN: 0324-0452
- Electronic ISSN:
- OCLC Number: 1877509
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
no.1-6 1975-77; v.1-6 (1975-77)
|
committed to retain | 2011-02-12 | HTDL |
|