Current biography.

1940-1944; v.6 1945; 1946; v.7 1946; v.8 1947; v.9 1948; 1949; v.10 1949; 1950; v.11 1950; 1951; v.12 1951; v.13 1952; 1953; v.14 1953; 1954; v.15 1954; v.17 1956; v.20 1956; 1957; v.18 1957; 1958; v.19 1958; 1960; v.21 1960; 1961; v.22 1961; v.23 1962; v.24 1963; v.25 1964; 1965; v.27 1966; v.28 1967; v.29 1968; v.30 1969; v.31 1970; 1971; v.33 1972; v.34 1973; v.35 1974; v.36 1975; v.37 1976; 1980-1981; 1988-1991; 1964 with index 1961-1964; 1987 with index 1981-1987; 1985 with index 1981-1985; 1984 with index 1981-1984; 1983 with index 1981-1983; 1979 with index 1971-1979; 1977 with index 1971-1977; 1976 with index 1971-1976; 1975 with index 1971-1975; 1974 with index 1971-1974; 1973 with index 1971-1973; 1972 with index 1971-1972; 1940-1970 cumulated index; 1970 with index 1961-1970; 1969 with index 1961-1969; 1968 with index 1961-1968; 1967 with index 1961-1967; 1966 with index 1961-1966; 1963 with index 1961-1963; 1962 with index 1961-1962; 1959 with index 1951-1959; 1955 with index 1951-1955; 1952 with index 1951-1952; 1948 with index 1940-1948; 1947 with index 1940-1947; 1945 with index 1940-1945; 1982 with index 1981-82; 1986 with index 1981-86; 1956 with Index 1951-56; 1978 with index 1971-78