Bestand
1962,1-4; 1963,1,4,7; 1964,3; 1965,1,2,4-6; 1966,2,3,5,6; 1967,1,3-5; 1971,6; 1972,6; 1973,2,6; 1974,2; 1978,3,4,6; 1979,2-5; 1980,1,3; 1981,2-5; 1982,2,4,6; 1983,2-4,6; 1984,1-6; 1985,1,2,4-6; 1986,2-5; 1987,1-6; 1988,1-3,5,6; 1989,1,2,4-6; 1990,1-3,5; 1992,He/Wi; 1993,6; 1994,3,4,6,12; 1995,2