Alternative.

v.1-2 no.1-9 1958-1959; no.1-15 1958-1960; v.3-5 no.10-27 1960-1962; v.6 no.28-34 1963; v.7-8 no.35-45 1964-1965; v.9-10 no.46-57 1966-1967; no.52-063 yr.1967-68; v.11-12 no.58-69 1968-1969; jahrg.13-14 (1970-71); v.13-14 no.70-81 1970-1971; no.82-087; no.82-87 Jan.-Dec.1972; jahrg.15-16 (1972-73); v.15-16 no.82-93 1972-1973; v.17-18 1974-1975; no.88-093; no.94-099; no.106-111; no.106-111 1976; v.19-20 1976-1977; v.21-22 1978-1979; v.23-24 1980-1981; no.130-141; no.142-146; no.142-146 1982; v.25 1982; index no.33-146 1963-1982