Helvetica physica acta.

v.1; v.1 1928; v.2 1928; v.2 (1929); v.3-4; v.3 1930; v.4 1931; v.5 1932; v.5-6 (1932-33); v.6 1933; v.7 1934; v.9 1934; v.8 (1935); v.9 (1936); v.10 1937; v.11 1938; v.12 1939; v.13 1940; v.14 1941; v.15 1942; v.15 (1942) (includes Cum; v.16-17; v.16 1943; v.17 1944; v.17-18 (1944-45); v.18-19; v.18 1945; v.19 1946; v.20-21; v.20 1947; v.21 1948; v.22 1949; v.23 1950; v.24 1951; v.25 1952; v.26 1953; v.27 1954; v.28 1955; v.29 1956; v.30; v.30 (1957) (includes Cum; v.31 1958; v.32 1959; v.33 1960; v.34 1961; v.35 1962; v.36 1963; v.37 1964; v.38 1965; v.39 1966; v.40 1967; v.40:1-5 1967; v.40:6-8 1967; v.41; v.41:1-5 (Jan-July 1968); v.41:6-8 (Sept-Dec 1968); v.41:1-5 1968; v.41:6-8 1968; v.41 1968 no.1-4; v.41 1968 no.5-8; v.42 1969; v.42:1-4 (1969); v.42:5-8 (1969); v.43 1970; v.43:1-4 (1970); v.43:5-8 (1970); v.44 1971; v.44:1-3 (1971); v.44:4-7 (1971); v.45 1972; v.45 1972 no.1-4; v.45 1972 no.5-7; v.46 (1973); v.46 1973-74; v.47 1974; v.48 1975; v.49 (1976); v.49 1976 no.1-3; v.49 1976 no.4-6; v.50 (1977); v.50 1977 no.1-3; v.50 1977 no.4-6; v.51 (1978); v.51 1978 no.1-3; v.51 1978 no.4-6; v.52 (1979); v.52 1979 no.1-3; v.52 1979 no.4-6; v.52 1979-80; v.53 yr.1980; v.53 1980; v.54 yr.1981; v.54 1981; v.55 yr.1982; v.55 1982; v.55:1-3 1982; v.55:4-6 1982; v.56 yr.1983; v.56 (1983); v.56:1-3 1983; v.56:4-6 1983; v.56 1983 no.1-3; v.56 1983 no.4-6; v.57 yr.1984; v.57 (1984); v.57 1984 no.1-3; v.57 1984 no.4-6; v.58 1985; v.58 1985 no.1-3; v.58 1985 no.4-6; v.59:1-4 1986; v.59:5-8 1986; v.59 no.1-4; v.59 1986 no.1-4; v.59 no.5-8 yr.1986; v.59 1986 no.5-8; v.60:1-4 1987; v.60:5-8 1987; v.60 no.1-4; v.60 1987 no.1-4; v.60 no.5-8; v.60 1987 no.5-8; v.61:1-4 1988; v.61:5-8 1988; v.61 1988 no.1-4; v.61 no.5-8 yr.1988; v.61 no.5-8 1988; v.62:1-4 1989; v.62:5-8 1989; v.62 no.1-4 1989; v.62 no.5-8 1989; v.63:1-4 1990; v.63:5-8 1990; v.63 no.1-4 1990; v.63 no.5-8 1990; v.64:1-4 (1991); v.64:5-8 (1991); v.64 no.1-4 yr.1991; v.64 no.1-4 1991; v.64 no.5-8 yr.1991; v.64 no.5-8 1991; v.65:1-4 1992; v.65:5-8 1992; v.65 no.1-4