High fidelity.

v.15:no.7-12 (1955:July-Dec.); v.6 no.7 July 1956; v.6 no.8 August 1956; v.6 no.9 September 1956; v.6 no.10 October 1956; v.6 no.11 November 1956; v.7:no.1-6 (1957:Jan.-June); v.7:no.7-12 (1957:July-Dec.); v.8:no.1-6 (1958:Jan.-June); v.8:no.7-12 (1958:July-Dec.); v.9:no.1-6 (1959:Jan.-June); v.9:no.7-12 (1959:July-Dec.); v.10:no.1-6 (1960:Jan.-June); v.10:no.7-12 (1960:July-Dec.); v.11:no.1-6 (1961:Jan.-June); v.11:no.7-12 (1961:July-Dec.); v.12 no.1 January 1962; v.12 no.2 February 1962; v.12 no.3 March 1962; v.12 no.4 April 1962; v.12:no.7-12 (1962:July-Dec.); v.14:no.1-6 (1964:Jan.-June); v.14:no.7-12 (1964:July-Dec.); v.15:no.1-6 (1965:Jan.-June); v.16:no.1-6 (1966:Jan.-June); v.16:no.7-12 (1966:July-Dec.); v.17:no.1-6 (1967:Jan.-June); v.17:no.7-12 (1967:July-Dec.); v.18:no.1-6 (1968:Jan.-June); v.18:no.7-12 (1968:July-Dec.); v.19:no.1-6 (1969:Jan.-June); v.19:no.7-12 (1969:July-Dec.); v.20:no.1-6 (1970:Jan.-June); v.20:no.7-12 (1970:July-Dec.); v.21:no.1-6 (1971:Jan.-June); v.21:no.7-12 (1971:July-Dec.); v.22:no.1-6 Jan.-June 1972; v.22:no.7-12 (1972:July-Dec.); v.23:no.1-6 (1973:Jan.-June); v.23:no.7-12 (1973:July-Dec.); v.24:no.1-6 (1974:Jan.-June); v.24:no.7-12 (1974:July-Dec.); v.25:no.1-6 (1975:Jan.-June); v.25:no.7-12 (1975:July-Dec.); v.26:no.1-6 (Jan.-June); v.26:no.7-12 (1976:July-Dec.); v.27:no.1-6 (1977:Jan.-June); v.27:no.7-12 (1977:July-Dec.); v.28:no.1-6 (1978:Jan.-June); v.28:no.7-12 (1978:July-Dec.); v.29:no.1-6 (1979:Jan.-June); v.29:no.7-12 (1979:July-Dec.); v.30:no.1-6 (1980:Jan.-June); v.30:no.7-12 (1980:July-Dec.); v.31:no.1-6 (1981:Jan.-June); v.31:no.7-12 (1981:July-Dec.); v.32:no.1-6 (1982:Jan.-June); v.32:no.7-12 (1982:July-Dec.); v.33:no.1-5 (1983:Jan.-May); v.33:no.6-12 (1983:June-Dec.); v.34:no.6 (1984); v.34:no.7-12 (1984:July-Dec.); v.35:no.1-6 (1985:Jan.-June); v.35:no.7-12 (1985:July-Dec.); v.36:no.7-12 (1986:Jul.-Dec.); v.39:no.1-7 (1989:Jan.-July)