1 September 1980 - 1 January 1983
| DOI | https://doi.org/10.48597/UMG2-PHWZ |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |
| DOI | https://doi.org/10.48597/V4CR-FFDJ |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |
| DOI | https://doi.org/10.48597/7SDC-8X8U |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |
| DOI | https://doi.org/10.48597/CRM2-HERE |
|---|---|
| Start time | 1 September 1980 |
| Stop time | 1 January 1983 |