Bestand
10.1961,9-12; 11.1962,1-12; 12.1963,1-12; 13.1964,1-12; 14.1965,1,2; 15.1966,2-7/8,10-12; 16.1967,1u.3-4u.6; 17.1968,2-3u.5; 18.1969,10-12; 19.1970,2-12; 20.1971,1-12; 23.1974,11; 25.1976,1u.5-6u.9-11; 27.1978,3-12; 28.1979,1-12; 29.1980,1-12; 30.1981,1-12; 31.1982,1-2u.5-6; 38.1989,3