Yes, here is the complete result:
1. Koussis (gre) 2h06.53"
2. Marchei (ita) 2h07.15"
3. Terzi (tur) 2h10.10"
The distance was 899 meters shorter, so - at average speed - you may consider koussis time was worth about 2h09.38", an excellent time in 1979 (it 'd be 6th on all time list, WR Derek Clayton 2h08.34").
However, November 1979 T&FN issue reports as winner Marco Marchei. Can you (GH or BH) tell me why?