Jahr Jahrgang Nr. Bestand RBI-Journal 1979 12 2-4 O 1980 13 1-4 O 1981 14 1-4 O 1982 15 1, 2 O RBI Information 1982/1983 S O 1983 1, 2 O 1984 1, 2 O 1985 1, 2 O 1986 1 O 1986/87 S O 1987 S O 1987/88 S O 1988 S O 1988/89 S O 1989 1 O RBI Extra 1990 Sommer/Herbst O