Title: Relativity in celestial mechanics and astrometry
Subtitle: high precision dynamical theories and observational verifications : proceedings of the 114th Symposium of the International Astronomical Union, held in Leningrad, USSR, May 28-31, 1985
Subjects: Congresses, Celestial mechanics, Astrometry, General relativity (Physics), Mécanique céleste, Congrès, Astrométrie, Relativité générale (Physique), Hemelmechanica, Relativistische benadering