Wage rates, salaries and hours of labour;

no.1-7 1901/1920-1920/1924; no.3-5,7-15 1920/1921-1931; no.16-22 1932-1938; no.23-29 1939-1946; no.30-36 1947-1953; no.37-40 1954-1957; no.41-42 1958-1959; no.43 1960; no.44-45 1961-1962; no.45-46 1962-1963; no.47 1964; no.48-49 1965-1966; no.50-51 1967-1968; no.52-53 1969-1970; no.54-55 1971-1972; 1974 pt.1-8; 1974 pt.15-21; 1974 pt.22-28; 1974 pt.29-35; 1977 pt.1; 1977 pt.2; 1977 pt.3; 1979 pt.1; 1979 pt.2; 1979 pt.3; 1979 pt.4