1 September 1980 - 1 January 1984
| DOI | https://doi.org/10.48597/MVB4-V3Q8 |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1984 |
| DOI | https://doi.org/10.48597/SG5B-YWG4 |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1984 |
| DOI | https://doi.org/10.48597/DS66-GC5N |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1984 |
| DOI | https://doi.org/10.48597/XGXS-H3XW |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |
| DOI | https://doi.org/10.48597/H465-7F5N |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |