
Section of a Boeing 747, 1973.
1973
1973
1974
1974
1971
1971
circa 1972
1971
1974
1973
1974
1974
1971
1971
1974
1971
1974
1974
1974
1972
1972
1974
1971
1971
1972
1973
1971
1974
1974
1974
1972
1974
1974
1974
1974
1973
1974
1974
1974
1974
1974
1972
1972
1972
1974
1974
(1962); 1982
2000-100 BCE
1974
1903 (original); 1982 (model)
1990-96