Bibliotheksdienst.

1967-1974; 1975:1-6; 1975:7-12; 1976:1-6; 1976:7-12; 1977:1-6; 1977:7-12; 1978:1-6; 1978:7-12; 1979:1-6; 1979:7-12; 1980:1-6; 1980:7-12; 1981:1-6; 1981:7-12; 1982:1-6; 1982:7-12; v.17:1-6 (Jan-June 1983); v.17:7-12 (July-Dec 1983); v.18:1-6 (Jan-June 1984); v.18:7-12 (July-Dec 1984); v.19:1-6 (Jan-June 1985); v.19:7-12 (July-Dec 1985); v.20:1-6 (Jan-June 1986); v.20:7-12 (July-Dec 1986); v.21:1-6 (Jan-June 1987); v.21:7-12 (July-Dec 1987); v.22:1-6 (Jan-June 1988); v.22:7-12 (July-Dec 1988); v.23:1-6 (Jan-June 1989); v.23:7-12 (July-Dec 1989); v.24:1-6 (Jan-June 1990); v.24:7-12 (July-Dec 1990); v.25:1-6 (Jan-June 1991); v.25:7-12 (July-Dec 1991); v.26:1-6 (Jan-June 1992); v.26:7-9 (July-Sept 1992); v.26:10-12 (Oct-Dec 1992); v.27:1-6 (Jan-June 1993); v.27:7-9 (July-Sept 1993); v.27:10-12 (Oct-Dec 1993); v.28:1-4 (Jan-Apr 1994); v.28:5-8 (May-Aug 1994); v.28:9-12 (Sept-Dec 1994); v.29:1-3 (Jan-Mar 1995); v.29:4-6 (Apr-June 1995); v.29:7-9 (July-Sept 1995); v.29:10-12 (Oct-Dec 1995)