Statistics of foreign trade:

1960-1961; 1962 pt.1; 1962 pt.2; 1963; 1964 pt. 1; 1964 pt. 2; 1965-1967; 1968 pt.1; 1968 pt. 2; 1969 pt.1; 1969 pt.2; 1970 pt.1; 1970 pt.2; 1971-1973; 1974:Sept.; 1974:June-Dec.; 1974; 1974:June; 1974:July; 1974:Aug.; 1974:Oct.; 1974:Nov.; 1974:Dec.; 1974 pt.2; 1975JAN APR-JUNE; 1975:July-Dec.; 1975:Jan.-June; 1975 May-Aug.; 1975 Sept.-Dec.; mo.JUL-DEC yr.1975; 1975 no.1-6; 1975 pt.2; 1975 no.7-12; 1976JAN MAR-JUNE; 1976:July-Dec.; 1976:Jan.-June; 1976 Sept.-Dec.; 1976 Jan.-April; 1976 May-Aug.; 1976 no.1-6; 1976 pt.2; 1976 no.7-12; 1977:July-Dec.; 1977:Jan.-June; 1977 Jan.-April; 1977 Sept.-Dec.; 1977:Feb.; 1977:Mar.; 1977:Apr.; 1977:May; 1977:June; 1977 no.1-6; 1977 pt.2; 1977 no.7-12; 1978:July-Dec.; 1978:Jan.-June; 1978 May-Aug.; 1978 Sept.-Dec.; 1978 Jan.-April; 1978 no.1-6; 1978 pt.2; 1978 no.7-12; 1979:July-Dec.; 1979:Jan.-June; 1979 pt.1; 1979 no.1-6; 1979 pt.2; 1979 no.7-12; 1980:July-Dec.; 1980:Jan.-June; mo.JUL-DEC yr.1980; 1980 no.1-6; 1980 pt.2; 1980 no.7-12; 1981: July; 1981: June; 1981: May; 1981: April; 1981: March; 1981: February; 1981: January; 1981: August; 1981: September; 1981: October; 1981: November; 1981: December; 1981:July-Dec.; 1981:Jan.-June; 1981 no.1-6; 1981 pt.2; 1981 no.7-12; 1982: January; 1982: February; 1982: March; 1982: April; 1982: May; 1982: June; 1982: July; 1982: August; 1982: September; 1982: October; 1982: November; 1982: December; 1982:July-Dec.; 1982:Jan.-June; 1982 pt.1; 1982 no.1-6; 1982 pt.2; 1982 no.7-12; 1983: January; 1983: February; 1983: March; 1983: April; 1983: May; 1960 suppl.; 1961 suppl.; 1962 suppl.; 1963 suppl.; 1964 suppl.; 1965 suppl.; 1966 suppl.; 1967 suppl.