Bestand
6.1968,26-27; 7.1969,28-34; 8.1970,43; 9.1971,46,48,52; 10.1972,57-58; 15.1977,1,83; [16.]1978,1,100; 17.1979,95; 18.1980,96; [20.]1982,101; [21.]1983,105,107; [22.]1984,108; 25.1987,126; 26.1988,128-129; 28.1990,135; [30.]1992,139; 30.1993,141; 32.[1994],145-147; 33.[1995] - 37.1999,149-151
