1. Model studies of the chemisorption of hydrogen and oxygen on nickel surfaces

   • Itai Panas
   • Per Siegbahn
   • Ulf Wahlgren

   OriginalPaper Pages: 167 - 184

2. Electric properties of the chloride ion

   • Vladimir Kellö
   • Björn O. Roos
   • Andrzej J. Sadlej

   OriginalPaper Pages: 185 - 194

3. Theoretical studies on quinones I. The structure of p-benzoquinone and two of its excited triplet states

   • John R. Ball
   • Colin Thomson

   OriginalPaper Pages: 195 - 208

4. Violation of Hund's rule in the lowest excited singlet-triplet pairs of dicyclohepta[cd,gh]pentalene and dicyclopenta[ef,kl]heptalene

   • Azumao Toyota

   OriginalPaper Pages: 209 - 217

5. On the relationship between crystal quantum numbers and irreducible representations of point groups

   • W. Beeckman
   • J. Goffart

   OriginalPaper Pages: 219 - 228

6. Extended-Hückel parameters for third-row transition metals

   • Rainer Jostes

   OriginalPaper Pages: 229 - 235

7. Book review

   • N. M. Kostić

   BookReview Pages: 237 - 237

8. Second announcement

   Announcement Pages: 238 - 238