Holdings
8.1954/57,5-10,13-19,21-24; 9.1958/60,1-7,9,9a,10-19; 10.1961/66,1-23,25-36; 11.1967/68,1-12; 12.1968/74,1-34; 13.1975/76,1-12; 14.1977/79,13-31; 15.1980/84,1-26; 16.1985/87,1-25; 17.1988/90,2-46; 18.1991/93,1-39; 19.1994/97,1-44; 20.1997/2000,39; 21.2001,1-12; 21.2002,1-6