Holdings
1972 bis 1993 lückenhaft.- Ab 1994 komplett. 1972=2; 1980=38; 1981=44,47,48,50; 1982=54-60; 1983=62-65,67,69; 1984=70-76,78-83; 1985=84,85,87,88; 1986=89,90,92-94; 1987=96-100; 1988=102-105; 1989=107-110,113; 1990=114,115; 1991=121,123-124; 1992=126-131; 1993=132,134-137; 1994=138-143; 1995=144-149; 1996=150-155; 1997=156-161; 1998=162-167; 1999=168-173; 2000=174-179; 2001=180-185; 2002=186-191; 2003=192-197 ; 2004=198-203 ; 2005=204-207; 2006=208-211; 2007=212-215; 2008=216-219; 2009=220-223; 2010=224-227; 2011=228-231; 2012=232-235; 2013=236-238