1. Numerical simulations of collisions in self-gravitating systems

   • J. Lukkari
   • H. Salo

   OriginalPaper Pages: 1 - 13

2. Possible conditions for formation of satellite from protoearth by ejection of material

   • H. F. Petersons

   OriginalPaper Pages: 15 - 24

3. Geology and tectonics of the Argyre area on Mars: Comparisons with other basins in the solar system

   • P. G. Thomas
   • Ph. Masson

   OriginalPaper Pages: 25 - 42

4. The large-number hypothesis and the Earth's expansion-II

   • S. Yabushita

   OriginalPaper Pages: 43 - 47

5. Morphology and origin of ridges in low-latitude areas of Mars

   • René Battistini

   OriginalPaper Pages: 49 - 61

6. Terra scarps indicating youngest terra faults on the moon

   • J. Raitala

   OriginalPaper Pages: 63 - 74

7. Interpretation of grazing impacts on Mars by the axial rotation theory

   • Nils Aall Barricelli

   Letter to the Editor Pages: 75 - 78

8. Bibliography

   Legacy Pages: 79 - 117