Bestand
1987, No. 168-171; 1988, No. 178, 182-190; 1989, No. 191-197, 199-206; 1990, No. 207-208, 210-211, 216-218, 220; 1991, No. 222, 224,-228; 1992, No. 232, 234, 236-239, 241-242; 1993, No. 243-245, 247; 1994, No. 260, 263-264; 1995, No. 267-270, 272, 274; 1996, No. 275-278, 280-283; 1997, No. 284, 286; 289-290, 293-294; 1998, No. 295-303; 1999, No. 305-306, 310-313; 2000, No. 316-318, 321-324; 2001, No. 325-326, 330-335; 2002, No. 336-338, 340-342, 346-347; 2003, No. 348, 350-351, 354-360; 2004, No. 363-366, 369-370; 2005, No. 374-377, 382, 385; 2006, No. 387-390