Bestand
8.1974,9; 8.1974,11 - 9.1975,2; 9.1975,7/8-10; 10.1976,3; 10.1976,7/8; 10.1976,10; 10.1976,12; 11.1977,3; 11.1977,8; 11.1977,10-11; 12.1978,12; 13.1979,8; 14.1980,2; 14.1980,8/9; 15.1981,8; 15.1981,11; 16.1982,2-3; 16.1982,7/8; 17.1983,1; 18.1984,2; 18.1984,8; 19.1985,1-2; 19.1985,4; 19.1985,6-7/8; 19.1985,10; 20.1986,2; 20.1986,11-12; 21.1987,3; 21.1987,6-8; 22.1988,2; 22.1988,4 - 23.1989