1 January 1974 - 1 January 1978
| DOI | https://doi.org/10.48597/DQST-PWKA |
|---|---|
| Start time | 1 January 1974 |
| Stop time | 1 January 1978 |
| DOI | https://doi.org/10.48597/ZYRX-VEZ7 |
|---|---|
| Start time | 1 January 1974 |
| Stop time | 1 January 1978 |
| DOI | https://doi.org/10.48597/M2WM-YMGC |
|---|---|
| Start time | 1 January 1974 |
| Stop time | 12 January 1979 |
| DOI | https://doi.org/10.48597/HCBA-XN2A |
|---|---|
| Start time | 1 January 1974 |
| Stop time | 12 January 1979 |