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.
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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.