1988 VN4
1988 VP4
1988 VP4
1988 VP4
1988 XB
1988 XB
1988 XB
1988-1991 photometry of the chromospherically active double-lined binary system HD 163621 = V835 Herculis
1988-89 Observations of II Peg
1989 - 1995: a Galileo navigation space odyssey.
1989 AC
1989 AC
1989 AC
1989 AC
1989 AC
1989 AC
1989 AC.
1989 at Icarus and in planetary science
1989 AZ
1989 AZ