Issue 6/1977 Articles Issue GeschichteRC Hang Gliding on the Hoch-Ybrig H. R. Schläpfer6/1977 Geschichte1977 Swiss Championships 6/1977 GeschichteFriendly Flights Werner Erismann6/1977 GeschichteGraupner Electronic PILOT Switch 6/1977 Geschichte"Prima" – a model airplane for beginners W. Heise6/1977
