Statistics of foreign trade.

1971:Jan./Dec.; 1972JAN-JUNE; 1972:Jan./Sept.; 1972:Jan./Dec.; 1972 Jan.-Sept.; ser.B 1972 Jan-Jun; 1972:Jan./June; no.1-6 yr.1972 mo.JAN-SEP; 1972 no.1; 1972Jan.-Dec.no.2-6; 1972 no.3 pt.1-5; 1972 no.3 pt.6; 1972 no.4 pt.1-5; 1972 no.4 pt.6; 1973:Jan./Sept.; 1973:Jan./June; 1973:Jan./Dec.; 1973 Jan.-Sept.; ser.B 1973 Jan-Mar; ser.B 1973 Jan-Jun; 1973:Jan./Mar.; 1973Jan.-Dec.no.1,3; 1973 no.1 pt.1-4; 1973 no.1 pt.5-6; 1973 no.2 pt.1-3; 1973 no.2 pt.4; 1973 no.2 pt.5-6; 1973 no.3 pt.4; 1973 no.3 pt.5-6; 1973 no.3 pt.1-3; 1973Jan.-Sept.no.4 1973; 1973 no.4; 1974:Jan./Dec.; 1974:Jan./Sept.; 1974:Jan./Mar.; 1974:Jan./June; 1974 Jan.-Sept.; ser.B 1974 Jan-Mar; 1974 no.1 pt.1-4; 1974 no.1 pt.5-6; 1974 no.2 pt.1-4; 1974 no.2 pt.5-6; 1974 no.3; 1974 no.4; 1975:Jan/Mar.; 1975:Jan./Sept.; 1975:Jan./June:6; 1975:Jan./June:4; 1975:Jan./June:3; 1975:Jan./June:2; 1975:Jan./June:1; 1975 Jan./Dec.; 1975:Jan./Dec.:1; 1975:Jan./Dec.:4; 1975:Jan./Dec.:5; 1975:Jan./Dec.:6; 1975 no.1 pt.1-3; 1975 no.1 pt.4-6; 1975 no.2 pt.1-3; 1975 no.2 pt.4-6; 1975 no.3 pt.1-3; 1975 no.3 pt.4-6; 1975 no.4 pt.1; 1975 no.4 pt.4-6; 1975 Jan.-Dec.,v.1-3; 1975 Jan.-Dec.,v.4-6; 1976 Jan/.Dec.; 1976:Jan./Mar.; 1976:Jan./June; 1976:Jan./Sept.; 1976:Jan./Dec.; 1976 no.1; 1976 no.2 pt.1-5; 1976 no.2 pt.6; 1976 no.3 pt.1-3; 1976 no.3 pt.4-6; 1976 no.4; 1976 Jan.-June,v.1-3; 1976 Jan.-Sept.,v.1-3; 1976 Jan.-March,v.1-3; 1976 Jan.-Dec.,v.1-3; 1976 Jan.-March,v.4-6; 1976 Jan.-June,v.4-6; 1976 Jan.-Sept.,v.4-6; 1976 Jan.-Dec.,v.4-6; 1977:corr.; 1977:Jan./Dec.; 1977 no.1 pt.1-6; 1977Jan.-Dec.no.6; 1977 Jan.-Dec.,v.1-3; 1977 Jan.-Dec.,v.4-6