1. Editorial

   • Z. Kopal

   EditorialNotes Pages: 391 - 391

2. Extended ring system of Uranus

   • J. C. Bhattacharyya
   • M. K. V. Bappu
   • S. K. Gupta

   OriginalPaper Pages: 393 - 404

3. Planet formation process as a phase transition

   • Paolo Farinella
   • Paolo Paolicchi
   • Federico Ferrini

   OriginalPaper Pages: 405 - 408

4. The shape of asteroids: Theoretical considerations

   • L. B. Ronca
   • R. B. Furlong

   OriginalPaper Pages: 409 - 417

5. Computer studies of the evolution of planetary and satellite systems I. Description of the program: Preliminary tests

   • Nils Aall Barricelli
   • Tormod Clemetsen
   • Erik Bølviken

   OriginalPaper Pages: 419 - 437

6. Serenitatis multi-ringed basin: Regional geology and basin ring interpretation

   • James W. Head III

   OriginalPaper Pages: 439 - 462

7. Bibliography of the moon and planets

   • Z. Kopal
   • M. Moutsoulas
   • F. B. Waranius

   Legacy Pages: 463 - 526

8. Announcement

   Announcement Pages: 527 - 527