Holdings
13.1963; 14.1964,1-3u.5-6; 15.1965 - 16.1966; 27.1977,3-4; 28.1978,1u.3-4; 29.1979,2; 30.1980,1-3; 31.1981; 32.1982,1u.3-4; 33.1983,1-3; 34.1984,2u.4; 35.1985,1-3; 36.1986,2u.4; 37.1987,2-4; 38.1988,4; 39.1989,2-4; 40.1990,1-3; 41.1991 - 45.1995; 46.1996,1-2u.4; 47.1997; 48.1998,1u.3-4; 49.1999,2-4; 50.2000,1u.3-4; 51.2001; 52.2002,2u.4; 53.2003,1u.3-4; 54.2004 - 55.2005