1. Überdeckungen von konjugiertenklassen Endlicher Gruppen

   • Bernd Baumann

   OriginalPaper Pages: 295 - 305

2. Sphären Mit Wenigen Ecken

   • Peter Kleinschmidt

   OriginalPaper Pages: 307 - 320

3. A geometric characterization of orthogonal groups for characteristic 2

   • Georg Günther

   OriginalPaper Pages: 321 - 346

4. Characterization of geodesic arcs

   • C. M. Petty

   OriginalPaper Pages: 347 - 359

5. Characterization of projective incidence structures

   • D. K. Ray-Chaudhuri
   • Alan P. Sprague

   OriginalPaper Pages: 361 - 376

6. Construction of hjelmslev planes from (t, k)-nets

   • David A. Drake
   • Ernest E. Shult

   OriginalPaper Pages: 377 - 392

7. Planar collineations of orderp in translation planes of orderp ^r

   • D. A. Foulser

   OriginalPaper Pages: 393 - 409

8. Projective planes of type I-4: Addendum

   • William M. Kantor

   Erratum Pages: 411 - 412