
Section of a Boeing 747, 1973.
1973
1973
1978
1974
1982
1978
1974
1984; 1983
1973-1983
1975
1975-1985
1979
1986
1975
1976
1979
circa 1972
1985
1984
1976-1979
1976
1982
1980
1975
1983
circa 1983
1976
1973-1983
1983
1984
1975
1974
1973
1974
1974
1974-1975
1975
1975
1975
1975
1974
1975
1975
1974
1974
1975
1974
1972
1975
1972
1975