1. In honor of Hans Freudenthal on his eightieth birthday

   • F. D. Veldkamp

   Announcement Pages: 3 - 5

2. Oktaven, Ausnahmegruppen und Oktavengeometrie

   • Hans Freudenthal

   OriginalPaper Pages: 7 - 63

3. Structure theorems on riemannian spaces satisfying R(X, Y) · R=0,

   • Z. I. Szabó

   OriginalPaper Pages: 65 - 108