| World Cup 1978 Argentina - Appearances as Assistant | ||||
| 06/06/1978 | Poland | - | Tunisia | 1:0 |
| 18/06/1978 | Poland | - | Peru | 1:0 |
| World Cup 1978 Argentina - Appearances as Assistant | ||||
| 06/06/1978 | Poland | - | Tunisia | 1:0 |
| 18/06/1978 | Poland | - | Peru | 1:0 |
| Complete name: | John Clive Thomas |
| Born: | 22/06/1936 |
| Place of birth: |
Wales |
| Residence: | Treorchy |
| Nationality: |
Wales |