New technical books.

v.1; v.1-4 (June 1915-Dec. 1919); v.2; v.3; v.4 1919; v.1-5 (1915-1920); v.1-5 1915-20; v.5 (1920); v.6-10(1921-1925); v.6-10 1921-1925; v.6-10 1921-25; v.11-15 1926-30; v.11-17 1926-1932; v.16-21 1931-36; v.18-24 1933-1939; v.25-29 1940-1944; v.22-31 1937-46; v.30-32 1945-1947; v.33-36 1948-1951; v.32-37 1947-52; v.35; v.36; v.37; v.37-40 no.5 1952-1955; v.38; v.39; v.40; v.40 no.6 1955 Nov-Dec; v.38-41 1953-56; v.41; v.41-43 1956-1958; v.42; v.42-44 1957-59; v.43; v.44; v.44-45 1959-1960; v.45 1960; v.46; v.46-47 1961-62; v.46-48 1961-1963; v.47; v.48; v.51 1966; v.52 1967; v.53 1968; v.53-54 1968-1969; v.54 1969; v.55 1970; v.56 1971; v.57 1972; v.58 1973; v.59 1974; v.60 1975; v.61; v.61 1976; v.62; v.62 1977; v.63; v.63 1978; v.64; v.64 1979; v.65; v.65 1980; v.66; v.66 1981; v.67; v.67 1982; v.68; v.68 1983; v.69 (1984); v.70 (1985); v.73 1988; v.74 1989; v.75 1990; v.76 1991; v.77 1992 Incompl.; v.77 no.1 1992 Jan-Feb; v.78 1993; v.79 1994