The Second line.

v.1-2 1950-1951; v.3-6 1952-1955; v.7-10 1956-1959; v.13 no.7-8 1962; v.14 no.7-8 1963; v.15 1964 Jan-Feb; v.15 no.5-6 1964; v.11-16 1960-1965; v.16 1965 Nov-Dec; v.17-21 1966-1969 Incompl.; v.22 1970 Jan-Apr; v.22 1970 Jul-Dec; v.23 1971 Fall; v.23 1971 Spring-Summer; v.24 1972 Winter; v.24 1972 Summer-Fall; v.25 1973 Spring; v.25 1973 Fall; v.26 1974 Winter; v.26 1974 Fall; v.27 1975; v.28 1976 Winter; v.28 1976 Summer; v.29 1977; v.30 1978 Spring; v.30 1978 Winter; v.31 1979 Spring-Summer; v.32 1980 Winter-Summer; v.33 1981 Summer-Fall; v.34 1982 Spring; v.34 1982 Fall-Winter; v.36 1984 Spring-Summer