1991 AQ = 1994 RD
1991 B, V, Rc, Ic Light Curves of the Southern Very Short Period Eclipsing Binary V676 Centauri
1991 BA
1991 BA.
1991 BB
1991 BB
1991 BB
1991 BN =
1991 BV Photoelectric Observations of CG Cyg
1991 BVR Photometry of CG Cygni
1991 BVR_cI_c Light Curves and Period Study for the very short period, active W UMa System, V743 Sagittarii
1991 BY2 = 1994 OA
1991 Comet Handbook
1991 CQ
1991 CQ
1991 CQ
1991 CS
1991 CS
1991 CS
1991 DA