| Europa League 1976/1977 - Appearances as Referee |  |
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| 15/09/1976 | Újpesti Dózsa SC | - | Athletic Bilbao | 1:0 | - | - | - |
| 02/11/1976 | Espanyol Barcelona | - | Eintracht Braunschweig | 2:0 | - | - | - |
| Europa League 1976/1977 - Appearances as Referee | |
|
|
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| 15/09/1976 | Újpesti Dózsa SC | - | Athletic Bilbao | 1:0 | - | - | - |
| 02/11/1976 | Espanyol Barcelona | - | Eintracht Braunschweig | 2:0 | - | - | - |
| Complete name: | John Clive Thomas |
| Born: | 22/06/1936 |
| Place of birth: |
Wales |
| Residence: | Treorchy |
| Nationality: |
Wales |