Annual report.

1st-5th (1950/1951-1954/1955); no.1-6 1950/1951-1955/1956; 6th (1956); no.5-7 1954/1955-1956/1957; 1954-1958 1954-1958; no.7-9 1956/1957-1958/1959; v.7-9 (1956/1957-1958/1959); 7th-9th (1957-1959); 1958-59 1958-1959; 1959-60 1959-1960; no.9-11 1958/1959-1960/1961; no.10-11 1959/1960-1960/1961; v.10-11 (1959/1960-1960/1961); 1960-61 1960-1961; 10th-11th (1960-1961); no.11-12 1960/1961-1961/1962; v.12-13 (1961/1962-1962/1963); 12th-13th (1962-1963); no.13 1962/1963; no.13 1963/1964; 1961-1965 1961-1965; v.14-18 (1963/1964-1964/1965); 15th (1965); no.14-16 1963/1964-1965/1966; 16th (1966); v.16-17 (1965/1966-1966/1967); 17th (1967); 1965-1968 1965-1968; no.17-18 1966/1967-1967/1968; v.18 (1967-1968); 18th (1968); no.19 1968/1969; v.19-21 (1968/1969-1970/1971); 1969-71 1969-1971; 20th-21st (1970-1971); no.19-22 1968/1969-1971/1972; yr.1972/73; 22nd-23rd (1972-1973); v.22-25 (1971/1972-1974/1975); 24th-25th (1974-1975); yr.1974/75-75/76; no.24-27 1973/1974-1976/1977; 1974-77 1974-1977; 26th-27th (1976-1977); 1977*; v.26-29 (1975/1976-1977/1979); 1979; yr.1977/78-79/80; no.28-30 1977/1978-1979/1980; 1978-80 1978-1980; 28th-30th (1978-1980); 1980-1981; yr.1980/81-81/82; 31st-32nd (1981-1982); 1982*; 1982; no.31-33 1980/1981-1982/1983; 1983*; 1983; no.33 1983; v.30-34 (1979/1980-1983/1984); 1981-1984 1981-1984; yr.1982/83-83/84; 33rd-34th (1983-1984); 1984*; 1984; 1985 1985; 1985*; 1985; 35th-36th (1985-1986); no.36 1985/1986; 1986; 1987*; 1987; yr.1984/85-87/88; v.35, 37-38 (1984/1985, 1986/1987-1987/1988); (1987-1988); no.37 1987/1988; 1988; no.34-36,39 1983/1984-1985/1986,1988/1989; 1987-1989 1987-1989; yr.1988/89; no.38 1988/1989; 1989 1989; 1989; yr.1989/90; (1989-1990); no.40 1989/1990; 1990 1990; 1990-1991; (1991-1992); 1992 1992; 1992-1993