Holdings
8.1969,10; 9.1970,1-3u.5u.7-12; 10.1971,1-6u.8-12; 18.1979,9-12; 19.1980,1-8u.10; 20.1981,1u.6; 21.1982,9-12; 22.1983 - 23.1984,1; 24.1985,3u.7u.11; 25.1986,1-4u.6-12; 26.1987,1-5u.8-11; 27.1988,1-4u.6-7u.9-12; 28.1989,1-4u.6u.9u.11; 29.1990,1u.4-11; 30.1991; 31.1992,1-2u.8u.11-12; 41.2002,1; 42.2003,4