1. Local condensations in collisional discs

   • K. A. Hämeen-Anttila

   OriginalPaper Pages: 113 - 131

2. On meteorite orbits

   • V. Tsvetkov

   OriginalPaper Pages: 133 - 140

3. A thermal modelling of cometary activity with a crystallized water ice nucleus

   • S. Yabushita
   • N. Hatta

   OriginalPaper Pages: 141 - 146

4. Possible ring system of Neptune

   • A. K. Pandey
   • H. S. Mahra

   OriginalPaper Pages: 147 - 153

5. Planetary heat flow limits on monopole and axion fluxes

   • C. Sivaram

   OriginalPaper Pages: 155 - 159

6. The role of solar-wind velocity-waves in comet outburst activity

   • N. G. Ptitsyna
   • A. K. Richter
   • T. K. Breus

   OriginalPaper Pages: 161 - 170

7. Landform investigation utilizing digitally processed satellite thematic mapper imagery

   • Arwyn Rhys Jones

   OriginalPaper Pages: 171 - 185

8. The first 800 million years: Environmental models for early earth

   • G. Arrhenius

   OriginalPaper Pages: 187 - 199

9. Short-lived Jovian decametric events observed with an acousto-optical radio spectrograph

   • Jorma J. Riihimaa

   OriginalPaper Pages: 201 - 212