1. The observational data base on the motion and evolution of comets and asteroids

   • Ľubor Kresák

   OriginalPaper Pages: 1 - 34

2. Primordial matter in the outer solar system: A study of its chemical composition from remote spectroscopic analysis

   • Thérèse Encrenaz

   OriginalPaper Pages: 35 - 87

3. ³He-rich solar flares

   • L. G. Kocharov
   • G. E. Kocharov

   OriginalPaper Pages: 89 - 141

4. The composition of heavy ions in solar energetic particle events

   • C. Y. Fan
   • G. Gloeckler
   • D. Hovestadt

   OriginalPaper Pages: 143 - 178

5. Book reviews

   • K. A. van der Hucht
   • A. Pedersen
   • J. Schrijver

   BookReview Pages: 179 - 186