Holdings
14.1960 - 23.1969; 24.1970,2 - 27.1973,3; 27.1973,5 - 29.1975,7; 29.1975,9 - 44.1990; 47.1993,1-11; 1994,3u.5-9u.11; 1995,1u.3-4u.6-12, 1996,1u.12; 1997,1-5u.7-10u.12; 1998,2-5u.7-12; 1999,1-9u.11-12; 2000; 2001,1-7u.9-12; 2002,2u.4-5u.7-12 [abbestellt]