1. Greek archaeomagnetic intensities: Some aspects of reliability and geophysical implications

   • Y. Liritzis

   OriginalPaper Pages: 1 - 13

2. Haser model CN, C₂ and C₃ production rates in some comets

   • A. A. De Almeida
   • P. D. Singh
   • C. M. Burgoyne

   OriginalPaper Pages: 15 - 31

3. Processes affecting the composition and structure of silicate grains in cometary nuclei

   • Joseph A. Nuth III

   OriginalPaper Pages: 33 - 50

4. Approximate calculations of collisional mean values for particulate systems

   • M. Verronen

   OriginalPaper Pages: 51 - 59

5. Application of diffusion — Convection model to diurnal anisotropy data

   • H. Mavromichalaki

   OriginalPaper Pages: 61 - 72

6. Third-order Jupiter — Saturn planetary theory

   • Osman M. Kamel

   OriginalPaper Pages: 73 - 89

7. Plasma tail of comet Bradfield 1987s during 1987 October 19–20

   • Andrea Cimatti

   OriginalPaper Pages: 91 - 103

8. The absence of large-scale volcanic crater subsidence in Ishtar Terra on Venus

   • Kent D. Trego

   Letter To The Editor Pages: 105 - 108