Le Professeur Constantin Dramba a son 85e anniversaire
HU Tau � an UnusualEclipsing Binary System: Photometry and Solutions
A. DUMITRESCU. M. D. SURAN, G. VASS
Semi-Opaque Thick Disks in W Ser-Type Binaries; Application to SX Cas
Quasiheliostrophic and Quasimagnetostrophic Asymptotic Approximations by Scale Analysis
On the Correlation between Wolf�s Numbers and the Barycentric Distance of the Sun
Spline Techniques in Empirical Data Fitting
Evolution of Satellite Orbits in an Atmosphere with North-South Asymmetry
Some Aerodynamic Effects in Artificial Satellite Motion
On the Dynamics of Earth�s Instantaneous Axis of Rotation
On the Motion of a Free Particle in Kinematic Relativity
Note on the Use of Units in an Artificial Satellite Dynamic Problem
Observations of Minor Planets in 1986-1990 at Bucharest
MISCELLANEA
Early Romanian Contributions to Celestial Mechanics
(A. PAL)
BOOK REVIEWS