Holdings
8.1972,35-39; 9.1973,40-44; 10.1974,46-50; 11.1975,51-55; 12.1976,56-61; 13.1977,62-67; 14.1978,68-71; 15.1979/80,72-76; 16.1980,77-80; 17.1982,81-84; 18.1983,85-88; 1984,89 - 1987,101; 1988,106 - 1996/97,140
[Forts. nur im Internet, URL: 130593745]