1. Response to Garfinkel's comments on ‘How critical is the critical inclination?’

   • Anthony G. Lubowe

   BriefCommunication Pages: 143 - 143

2. On the figure of the planet Mercury

   • Han-Shou Liu

   OriginalPaper Pages: 144 - 149

3. Families of periodic orbits continued in regularizing coordinates

   • André Deprit
   • Julian Palmore

   OriginalPaper Pages: 150 - 162

4. Corrections to the improved lunar ephemeris

   • Thomas C. Van Flandern

   OriginalPaper Pages: 163 - 166

5. Tesseral resonance effects on satellite orbits

   • G. S. Gedeon

   OriginalPaper Pages: 167 - 189

6. Expansion formulae in canonical transformations depending on a small parameter

   • Ahmed Aly Kamel

   OriginalPaper Pages: 190 - 199

7. The stellar three-body problem

   • Robert S. Harrington

   OriginalPaper Pages: 200 - 209

8. Note on a statement in A. Wintner'sAnalytical foundations of celestial mechanics

   • H. J. Sperling

   OriginalPaper Pages: 210 - 212

9. The collision singularity in a perturbed two-body problem

   • H. J. Sperling

   OriginalPaper Pages: 213 - 221

10. Birkhoff's normalization

    • André Deprit
    • Jacques Henrard
    • Arnold Rom

    OriginalPaper Pages: 222 - 251

11. Error analyses of resonant orbits for geodesy

    • Bruce C. Douglas
    • Chreston F. Martin
    • Carl A. Wagner

    OriginalPaper Pages: 252 - 270

12. A programming system for analytical series expansions on a computer

    • R. Broucke
    • K. Garthwaite

    OriginalPaper Pages: 271 - 284