FIS Ski Flying World Championships 1977
The FIS Ski Flying World Ski Championships 1977 took place in Vikersund, Norway on 18 February 1977. Switzerland's Walter Steiner became the first-two-time winner of the championships.
...
Wikipedia
The FIS Ski Flying World Ski Championships 1977 took place in Vikersund, Norway on 18 February 1977. Switzerland's Walter Steiner became the first-two-time winner of the championships.