Visual observations of artificial earth satellites in Finland.
- Publisher: University of Helsinki
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 2246600
- Subject: Artificial satellites Tracking.
- Subject code: T
- Publication history:
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1969; 1971-1972; 1973-1979 | permanent |