1. Generic singularities of the exponential map on Riemannian manifolds

   • Fopke Klok

   OriginalPaper Pages: 317 - 342

2. Subregular 1-spreads of PG(2n+1,2)

   • Gary L. Ebert

   OriginalPaper Pages: 343 - 353

3. Self-reflecting skew polygons and polytopes in the 4-dimensional hypercube

   • I. J. Schoenberg

   OriginalPaper Pages: 355 - 373

4. A classification of finite 2-fold Bolyai-Lobachevski spaces

   • Anne Delandtsheer

   OriginalPaper Pages: 375 - 393

5. Almost s-tangent manifolds

   • Jose A. Oubiña

   OriginalPaper Pages: 395 - 403

6. ‘Normal’ crystallizations of 3-manifolds

   • Paola Bandieri
   • Anna Donati
   • Luigi Grasselli

   OriginalPaper Pages: 405 - 418